implemented scheduled updates for widgets

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+>
 
     <!--
      Required to query activities that can process text, see:
@@ -19,6 +22,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+        tools:replace="android:label"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher"
         android:label="Marianum Fulda">