LOT of changes made in Xperia APPS

 - Updated WALKMAN to latest version from Xperia Z2
-  Updated Album to latest version  
-  Updated Video app to latest version


Some other changes made in System

- Updated build.prop 
- Updated Xperia tweaks 
- Updated Reborn tweaks to version 4 (A full changelog will be made about the new tweaks added)
- Temporarely removed the WALKMAN widget due to incompattibility