* Split out UIMode controller in separate class (in es-app).
* Fix passphrase input for wX360 controllers by ignoring hat-inputs
* Fix font fallback mechanism on rpi for non ascii characters using new Unicode2Chars() method.
* Fix UIMode not being saved due to popup window.
- Refactoring System Environment data
- Added Virtual System Manager class
- Added "all", "favorites" and "last played" systems
- Added GuiInfoPopup class for notifications
- Added Favorites to metadata, as well as a shortcut to toggle favorites
- Added warning if enabling systems but themes don't support it
- Added "filter by favorites" per system
- Adjusted "Go to Random Game" behavior to account for the fact that we now have an "All Games" system
- Added "sort by system name" for the collections
- Final changes for VLC screensaver support as well
- ALSA de-init/re-init only when needed
- Adding screensaver options menu inside UI settings
- Slightly moved options (Show Frameskip to "Other Settings", sorting within same menu)
- Adding info popups on random video screensaver and OMX + Game Info setting
- Correct handling of zombie processes left in memory
- Add options to mute video
- Fix resizing to work with theme refactorings introduced by jdrassa and zigurana
