sort groups on the groups picker alphabetically

app/src/main/kotlin/com/simplemobiletools/contacts/dialogs/SelectGroupsDialog.kt

@@ -22,7 +22,7 @@ class SelectGroupsDialog(val activity: SimpleActivity, val selectedGroups: Array
     private val dialog: AlertDialog?
 
     init {
-        groups.forEach {
+        groups.sortedBy { it.title }.forEach {
             addGroupCheckbox(it)
         }
 

build.gradle

@@ -9,7 +9,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.0'
+        classpath 'com.android.tools.build:gradle:3.1.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong