[PlayStore] Enrolled first viable PlayStore Version

In order to have AA work properly also on production devices
the app needs to be installed from a trusted install source,
which is the Google PlayStore. So the app is now rolled out via
GooglePlay for Beta-Testers.

.idea/gradle.xml

@@ -15,5 +15,6 @@
         <option name="resolveExternalAnnotations" value="false" />
       </GradleProjectSettings>
     </option>
+    <option name="offlineMode" value="true" />
   </component>
 </project>