Deaddrop subtitle: Show a hint instead of uninteresting contact count.

MessengerProj/src/main/java/com/b44t/messenger/MrMailbox.java

@@ -327,6 +327,7 @@ public class MrMailbox {
                     case 21: s = ApplicationLoader.applicationContext.getString(R.string.ErrSelfNotInGroup); break;
                     case 22: s = ApplicationLoader.applicationContext.getString(R.string.NoNetwork); break;
                     case 23: s = ApplicationLoader.applicationContext.getString(R.string.AttachGif); break;
+                    case 24: s = ApplicationLoader.applicationContext.getString(R.string.DeaddropSubtitle); break;
                 }
                 return String2CPtr(s);
 
@@ -335,7 +336,6 @@ public class MrMailbox {
                 switch( (int)data1 ) {
                     // the string-IDs are defined in the backend; as this is the only place where they're used, there is no benefit in creating an enum or sth. like that.
                     case 4: sp = ApplicationLoader.applicationContext.getResources().getQuantityString(R.plurals.Members, (int)data2, (int)data2); break;
-                    case 6: sp = ApplicationLoader.applicationContext.getResources().getQuantityString(R.plurals.Contacts, (int)data2, (int)data2); break;
                 }
                 return String2CPtr(sp);
 

MessengerProj/src/main/res/values-de/strings.xml

@@ -375,4 +375,5 @@
     <string name="SettingsFor">Einstellungen für %1$s</string>
     <string name="AutoplayGifs">GIFs automatisch abspielen</string>
     <string name="HelpUrl">https://delta.chat/de/help</string>
+    <string name="DeaddropSubtitle">Nachrichten, die zu keinen Chats gehören</string>
 </resources>

MessengerProj/src/main/res/values/strings.xml

@@ -376,5 +376,6 @@
     <string name="SettingsFor">Settings for %1$s</string>
     <string name="AutoplayGifs">Autoplay GIFs</string>
     <string name="HelpUrl">https://delta.chat/en/help</string>
+    <string name="DeaddropSubtitle">Messages not related to other chats</string>
 
 </resources>