Remove the fullscreen setting

Trying to use fullscreen doesn't work well in a multi-windowed world
and makes using translucent navigation and status bars more complicated.

app/src/main/res/layout/drawer_layout.xml

@@ -1,7 +1,8 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:fitsSystemWindows="true">
 
     <android.support.v4.widget.DrawerLayout
         android:id="@+id/drawer_layout"