fixed overlay bug with toolbar

res/values-v21/styles.xml

@@ -27,6 +27,7 @@
         <item name="android:alertDialogTheme">@style/Theme.ownCloud.Dialog</item>
         <item name="alertDialogTheme">@style/ownCloud.AlertDialog</item>
         <item name="searchViewStyle">@style/ownCloud.SearchView</item>
+        <item name="windowActionModeOverlay">true</item>
     </style>
 
     <style name="Theme.ownCloud.Toolbar.Drawer">

res/values/styles.xml

@@ -46,6 +46,7 @@
 		<item name="alertDialogTheme">@style/ownCloud.AlertDialog</item>
 		<item name="android:windowBackground">@color/background_color</item>
 		<item name="searchViewStyle">@style/ownCloud.SearchView</item>
+		<item name="windowActionModeOverlay">true</item>
     </style>
 
 	<!-- separate style for Drawer activities needed for v21+ theming -->