This change adds an image slideshow screensaver mode with optional
background audio. The existing menu and video screensaver have been
refactored to include this new mode.
By default, the slideshow screensaver will show images from the
game list, but it can be configured in the menu to use a custom
directory instead.
- 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
