New icons and skin.xml changes

1. Header of skin.xml file changed
2.  Main infobar is now cleaner with less information
3. Fixed mute image
4. GraphMultiEPG screen changed with user Blzr (OpenPLi) improvements
5. Small NumberZap screen changes
6. Added VideoSize OpenPli render to MoviePlayer screen
5. These screens were added:
PVRState
BitrateViewer
PermanentClockScreen
GraphMultiEPGSetup
MovieBrowserConfiguration
BackupScreen
More screens will be added in next updates!