fix #171, make sure the lock screen settings dont overlap

app/src/main/res/layout/activity_settings.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/settings_scrollview"
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
@@ -207,10 +208,12 @@
 
             <com.simplemobiletools.commons.views.MyTextView
                 android:id="@+id/settings_lock_screen_visibility_label"
-                android:layout_width="wrap_content"
+                android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_centerVertical="true"
+                android:layout_toStartOf="@+id/settings_lock_screen_visibility"
                 android:paddingStart="@dimen/medium_margin"
+                android:paddingEnd="@dimen/medium_margin"
                 android:text="@string/lock_screen_visibility" />
 
             <com.simplemobiletools.commons.views.MyTextView
@@ -220,7 +223,8 @@
                 android:layout_alignParentEnd="true"
                 android:layout_marginEnd="@dimen/medium_margin"
                 android:background="@null"
-                android:clickable="false" />
+                android:clickable="false"
+                tools:text="@string/sender_and_message" />
 
         </RelativeLayout>
     </LinearLayout>