use icons for conversation appbar edit view

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/res/menu/menu_conversation_info.xml

@@ -23,6 +23,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/edit"
+        android:icon="@drawable/ic_edit"
         android:title="@string/edit"
-        app:showAsAction="ifRoom" />
+        app:showAsAction="ifRoom"
+        app:iconTint="@color/high_emphasis_text"/>
 </menu>

app/src/main/res/menu/menu_conversation_info_edit.xml

@@ -23,6 +23,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/save"
+        android:icon="@drawable/ic_check"
         android:title="@string/save"
+        app:iconTint="@color/high_emphasis_text"
         app:showAsAction="ifRoom" />
 </menu>