diff --git a/app/build.gradle b/app/build.gradle
index ac053d0c7..0ca0d29e1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -46,7 +46,7 @@ ext {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:3.14.17'
+    implementation 'com.simplemobiletools:commons:3.15.0'
     implementation 'joda-time:joda-time:2.9.9'
     implementation 'com.facebook.stetho:stetho:1.5.0'
     implementation 'com.android.support:multidex:1.0.3'
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/activities/EventActivity.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/activities/EventActivity.kt
index 85465d277..72564ab4a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/activities/EventActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/activities/EventActivity.kt
@@ -552,7 +552,7 @@ class EventActivity : SimpleActivity() {
             reminder3Minutes = reminder3
             repeatInterval = mRepeatInterval
             importId = newImportId
-            flags = if (event_all_day.isChecked) (mEvent.flags or FLAG_ALL_DAY) else (mEvent.flags.removeFlag(FLAG_ALL_DAY))
+            flags = if (event_all_day.isChecked) (mEvent.flags.addBit(FLAG_ALL_DAY)) else (mEvent.flags.removeBit(FLAG_ALL_DAY))
             repeatLimit = if (repeatInterval == 0) 0 else mRepeatLimit
             repeatRule = mRepeatRule
             eventType = newEventType
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatLimitTypePickerDialog.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatLimitTypePickerDialog.kt
index af8137022..865091359 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatLimitTypePickerDialog.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/dialogs/RepeatLimitTypePickerDialog.kt
@@ -69,10 +69,11 @@ class RepeatLimitTypePickerDialog(val activity: Activity, var repeatLimit: Int,
             R.id.repeat_type_forever -> callback(0)
             else -> {
                 var count = view.repeat_type_count.value
-                if (count.isEmpty())
-                    count = "0"
-                else
-                    count = "-$count"
+                count = if (count.isEmpty()) {
+                    "0"
+                } else {
+                    "-$count"
+                }
                 callback(count.toInt())
             }
         }
diff --git a/app/src/main/res/values-br/strings.xml b/app/src/main/res/values-br/strings.xml
index 346836091..16be9ac69 100644
--- a/app/src/main/res/values-br/strings.xml
+++ b/app/src/main/res/values-br/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">pevare</string>
     <string name="last_f">diwezhañ</string>
 
-    <plurals name="days">
-        <item quantity="one">%ddevezh</item>
-        <item quantity="other">%da zevezhioù</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%dsizhun</item>
-        <item quantity="other">%dsizhun</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%dmiz</item>
-        <item quantity="other">%da vizioù</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%da vloavezhioù</item>
-        <item quantity="other">%da vloavezhioù</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Deizioù-ha-bloaz</string>
     <string name="add_birthdays">Ouzhpennañ deizioù-ha-bloaz an darempredoù</string>
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 509833653..57603bfd2 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -76,30 +76,6 @@
     <string name="fourth_f">čtvrtý</string>
     <string name="last_f">poslední</string>
 
-    <plurals name="days">
-        <item quantity="one">%d den</item>
-        <item quantity="few">%d dni</item>
-        <item quantity="other">%d dní</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d týden</item>
-        <item quantity="few">%d týdni</item>
-        <item quantity="other">%d týdnů</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d měsíc</item>
-        <item quantity="few">%d měsíce</item>
-        <item quantity="other">%d měsíců</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d rok</item>
-        <item quantity="few">%d roky</item>
-        <item quantity="other">%d roků</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-da/strings.xml b/app/src/main/res/values-da/strings.xml
index afdbea59b..a38bd7024 100644
--- a/app/src/main/res/values-da/strings.xml
+++ b/app/src/main/res/values-da/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fjerde</string>
     <string name="last_f">sidste</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dag</item>
-        <item quantity="other">%d dage</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d uge</item>
-        <item quantity="other">%d uger</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d måned</item>
-        <item quantity="other">%d måneder</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d år</item>
-        <item quantity="other">%d år</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Fødselsdag</string>
     <string name="add_birthdays">Tilføj dine kontakters fødselsdage</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index b38a42d08..c0efb2630 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">vierten</string>
     <string name="last_f">letzten</string>
 
-    <plurals name="days">
-        <item quantity="one">%d Tag</item>
-        <item quantity="other">%d Tage</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d Woche</item>
-        <item quantity="other">%d Wochen</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d Monat</item>
-        <item quantity="other">%d Monate</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d Jahr</item>
-        <item quantity="other">%d Jahre</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Geburtstage</string>
     <string name="add_birthdays">Kontaktgeburtstage hinzufügen</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index fe386ef59..5790dcada 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">cuarto</string>
     <string name="last_f">último</string>
 
-    <plurals name="days">
-        <item quantity="one">%d día</item>
-        <item quantity="other">%d días</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d semana</item>
-        <item quantity="other">%d semanas</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mes</item>
-        <item quantity="other">%d meses</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d año</item>
-        <item quantity="other">%d años</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Cumpleaños</string>
     <string name="add_birthdays">Añadir cumpleaños de contactos</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 0af3d6fbf..93e75def7 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">quatrième</string>
     <string name="last_f">dernier</string>
 
-    <plurals name="days">
-        <item quantity="one">%d jour</item>
-        <item quantity="other">%d jours</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d semaine</item>
-        <item quantity="other">%d semaines</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mois</item>
-        <item quantity="other">%d mois</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d an</item>
-        <item quantity="other">%d ans</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Anniversaires</string>
     <string name="add_birthdays">Ajouter les anniversaires des contacts</string>
diff --git a/app/src/main/res/values-gl/strings.xml b/app/src/main/res/values-gl/strings.xml
index c157f7172..0e1e59b8a 100644
--- a/app/src/main/res/values-gl/strings.xml
+++ b/app/src/main/res/values-gl/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">cuarto</string>
     <string name="last_f">último</string>
 
-    <plurals name="days">
-        <item quantity="one">%d día</item>
-        <item quantity="other">%d días</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d semana</item>
-        <item quantity="other">%d semanas</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mes</item>
-        <item quantity="other">%d meses</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d ano</item>
-        <item quantity="other">%d anos</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Cumpleanos</string>
     <string name="add_birthdays">Engadir cumpleanos de contactos</string>
diff --git a/app/src/main/res/values-hi-rIN/strings.xml b/app/src/main/res/values-hi-rIN/strings.xml
index 39a18b410..eaa677aef 100644
--- a/app/src/main/res/values-hi-rIN/strings.xml
+++ b/app/src/main/res/values-hi-rIN/strings.xml
@@ -77,26 +77,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index 617efbc06..fe41682c8 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 8411729f0..d9c409bf2 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-iw/strings.xml b/app/src/main/res/values-iw/strings.xml
index 715f0fe7b..5f9eaaf70 100644
--- a/app/src/main/res/values-iw/strings.xml
+++ b/app/src/main/res/values-iw/strings.xml
@@ -77,26 +77,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 75b4b649f..f2dcb4337 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index 3bbd3985a..b5a074ff0 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">생일</string>
     <string name="add_birthdays">연락처의 생일 추가</string>
diff --git a/app/src/main/res/values-nb/strings.xml b/app/src/main/res/values-nb/strings.xml
index bb0311dbf..0d61af57e 100644
--- a/app/src/main/res/values-nb/strings.xml
+++ b/app/src/main/res/values-nb/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fjerde</string>
     <string name="last_f">siste</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dag</item>
-        <item quantity="other">%d dager</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d uke</item>
-        <item quantity="other">%d uker</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d måned</item>
-        <item quantity="other">%d måneder</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d år</item>
-        <item quantity="other">%d år</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Bursdager</string>
     <string name="add_birthdays">Legg til kontaktbursdager</string>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index f7e5fccb1..91b44597e 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">vierde</string>
     <string name="last_f">laatste</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dag</item>
-        <item quantity="other">%d dagen</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weken</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d maand</item>
-        <item quantity="other">%d maanden</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d jaar</item>
-        <item quantity="other">%d jaren</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Verjaardagen</string>
     <string name="add_birthdays">Verjaardagen van contacten toevoegen</string>
diff --git a/app/src/main/res/values-no/strings.xml b/app/src/main/res/values-no/strings.xml
index 789deb3f1..ce61211f5 100644
--- a/app/src/main/res/values-no/strings.xml
+++ b/app/src/main/res/values-no/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fjerde</string>
     <string name="last_f">siste</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dag</item>
-        <item quantity="other">%d dager</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d uke</item>
-        <item quantity="other">%d uker</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d måned</item>
-        <item quantity="other">%d måneder</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d år</item>
-        <item quantity="other">%d år</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Bursdager</string>
     <string name="add_birthdays">Legg til kontaktbursdager</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index aa4beda1b..7730fcc0d 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -76,29 +76,6 @@
     <string name="fourth_f">czwarty(ą)</string>
     <string name="last_f">ostatni(ą)</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dzień</item>
-        <item quantity="other">%d dni</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d tydzień</item>
-        <item quantity="few">%d tygodnie</item>
-        <item quantity="other">%d tygodni</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d miesiąc</item>
-        <item quantity="few">%d miesiące</item>
-        <item quantity="other">%d miesięcy</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d rok</item>
-        <item quantity="few">%d lata</item>
-        <item quantity="other">%d lat</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Urodziny</string>
     <string name="add_birthdays">Dodaj urodziny kontaktów</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index c524fd04c..fc8765cfc 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dia</item>
-        <item quantity="other">%d dias</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d semana</item>
-        <item quantity="other">%d semanas</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mês</item>
-        <item quantity="other">%d meses</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d ano</item>
-        <item quantity="other">%d anos</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index ac60ab687..5cab54f3e 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">quarto</string>
     <string name="last_f">último</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dia</item>
-        <item quantity="other">%d dias</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d semana</item>
-        <item quantity="other">%d semanas</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mês</item>
-        <item quantity="other">%d meses</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d ano</item>
-        <item quantity="other">%d anos</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Data de nascimento</string>
     <string name="add_birthdays">Adicionar data de nascimento dos contactos</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index e21cdc604..4e674f2a8 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -76,34 +76,6 @@
     <string name="fourth_f">четвёртый</string>
     <string name="last_f">последний</string>
 
-    <plurals name="days">
-        <item quantity="one">%d день</item>
-        <item quantity="few">%d дня</item>
-        <item quantity="many">%d дней</item>
-        <item quantity="other">%d дня(-ей)</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d неделя</item>
-        <item quantity="few">%d недели</item>
-        <item quantity="many">%d недель</item>
-        <item quantity="other">%d недели(-ль)</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d месяц</item>
-        <item quantity="few">%d месяца</item>
-        <item quantity="many">%d месяцев</item>
-        <item quantity="other">%d месяца(-ев)</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d год</item>
-        <item quantity="few">%d года</item>
-        <item quantity="many">%d лет</item>
-        <item quantity="other">%d года(лет)</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Дни рождения</string>
     <string name="add_birthdays">Добавить дни рождения контактов</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index 6ff373db9..d63b3b710 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -76,30 +76,6 @@
     <string name="fourth_f">štvrtú</string>
     <string name="last_f">poslednú</string>
 
-    <plurals name="days">
-        <item quantity="one">%d deň</item>
-        <item quantity="few">%d dni</item>
-        <item quantity="other">%d dní</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d týždeň</item>
-        <item quantity="few">%d týždne</item>
-        <item quantity="other">%d týždňov</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d mesiac</item>
-        <item quantity="few">%d mesiace</item>
-        <item quantity="other">%d mesiacov</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d rok</item>
-        <item quantity="few">%d roky</item>
-        <item quantity="other">%d rokov</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Narodeniny</string>
     <string name="add_birthdays">Pridať narodeniny kontaktov</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index 272a77955..b16b3f501 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fjärde</string>
     <string name="last_f">sista</string>
 
-    <plurals name="days">
-        <item quantity="one">%d dag</item>
-        <item quantity="other">%d dagar</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d vecka</item>
-        <item quantity="other">%d veckor</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d månad</item>
-        <item quantity="other">%d månader</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d år</item>
-        <item quantity="other">%d år</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Födelsedagar</string>
     <string name="add_birthdays">Lägg till kontakters födelsedagar</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index ff7fabe84..6ec5894a4 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">dördüncü</string>
     <string name="last_f">son</string>
 
-    <plurals name="days">
-        <item quantity="one">%d gün</item>
-        <item quantity="other">günler %d</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d hafta</item>
-        <item quantity="other">haftalar %d</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d ay</item>
-        <item quantity="other">aylar %d</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d yıl</item>
-        <item quantity="other">yıllar %d</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 75be31965..454db1cd9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -76,26 +76,6 @@
     <string name="fourth_f">fourth</string>
     <string name="last_f">last</string>
 
-    <plurals name="days">
-        <item quantity="one">%d day</item>
-        <item quantity="other">%d days</item>
-    </plurals>
-
-    <plurals name="weeks">
-        <item quantity="one">%d week</item>
-        <item quantity="other">%d weeks</item>
-    </plurals>
-
-    <plurals name="months">
-        <item quantity="one">%d month</item>
-        <item quantity="other">%d months</item>
-    </plurals>
-
-    <plurals name="years">
-        <item quantity="one">%d year</item>
-        <item quantity="other">%d years</item>
-    </plurals>
-
     <!-- Birthdays -->
     <string name="birthdays">Birthdays</string>
     <string name="add_birthdays">Add contact birthdays</string>