add dummy text 'stop location sharing' to resources

deltachat-ios/en.lproj/Localizable.strings

@@ -621,3 +621,4 @@
 
 "import_contacts" = "Import device contacts";
 "import_contacts_message" = "To chat with contacts from your device open Settings and enable Contacts.";
+"stop_sharing_location" = "Stop sharing location";

tools/untranslated.xml

@@ -4,4 +4,5 @@
     <!-- iOS specific untranslated strings -->
     <string name="import_contacts">Import device contacts</string>
     <string name="import_contacts_message">To chat with contacts from your device open Settings and enable Contacts.</string>
+    <string name="stop_sharing_location">Stop sharing location</string>
 </resources>