ui: cleanups

Tuleap: #102
Change-Id: I240a4480261416e5726e35d6bbd990982c67d814
diff --git a/ring-android/app/src/main/res/menu/ac_call.xml b/ring-android/app/src/main/res/menu/ac_call.xml
index eff7bf7..80578de 100644
--- a/ring-android/app/src/main/res/menu/ac_call.xml
+++ b/ring-android/app/src/main/res/menu/ac_call.xml
@@ -1,9 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
         android:id="@+id/menuitem_chat"
-        android:showAsAction="always"
+        app:showAsAction="always"
         android:icon="@drawable/ic_chat_white_24dp"
         android:title="@string/ab_action_chat"/>