ui: support for xhdpi large screen

res/values-sw600dp-xhdpi/dimens.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- 
+Copyright (C) 2004-2014 Savoir-Faire Linux Inc.                     
+                                                                    
+Author: Alexandre Lision <alexandre.lision@gmail.com>                     
+                                                                    
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or   
+(at your option) any later version.                                 
+                                                                    
+This program is distributed in the hope that it will be useful,     
+but WITHOUT ANY WARRANTY; without even the implied warranty of      
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       
+GNU General Public License for more details.                        
+                                                                    
+You should have received a copy of the GNU General Public License   
+along with this program; if not, write to the Free Software         
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.          
+                                                                    
+Additional permission under GNU GPL version 3 section 7:            
+                                                                    
+If you modify this program, or any covered work, by linking or      
+combining it with the OpenSSL project's OpenSSL library (or a       
+modified version of that library), containing parts covered by the  
+terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.    
+grants you additional permission to convey the resulting work.      
+Corresponding Source for a non-source form of such a combination    
+shall include the source code for the parts of OpenSSL used as well 
+as that of the covered work.
+ -->
+ 
+  <!--
+         Customize dimensions originally defined in res/values/dimens.xml (such as
+         screen margins) for sw600dp devices (e.g. 7" tablets) here.
+    -->
+ 
+<resources>
+
+	
+	<dimen name="bubble_size">50dp</dimen>
+	
+
+</resources>
\ No newline at end of file

res/values-sw720dp-land/dimens.xml

-<resources>
-
-    <!--
-         Customize dimensions originally defined in res/values/dimens.xml (such as
-         screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here.
-    -->
-    <dimen name="activity_horizontal_margin">128dp</dimen>
-
-</resources>

res/values/dimens.xml

@@ -41,8 +41,6 @@ as that of the covered work.
     <dimen name="contact_drawer_handle_height">36dp</dimen>
     <dimen name="contact_drawer_handle_height_with_shadow">40dp</dimen>
 
-    
-    
     <dimen name="contact_vertical_spacing">10dp</dimen>