fix little bug on tablet interface

Aikuma/res/layout-xlarge/content_dialog_select_file_frag.xml

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent" >
+    android:layout_height="match_parent" 
+    android:id="@+id/layoutListView">
     
     <ImageView 
      	android:layout_width="75dp"