Extended Key with Deserialize method
Added new ShortcutResourcesLoader to load key mappings from Skin resources (both actions and states).
Extended workflow manager to (de-)register keybindings
Added "H" as HOME shortcut
Added "T" for LiveTV, "G" for Guide (+special keys)
Added "W" for Weather
Added "V" for Videos, "M" for Movies, "S" for Series, "I" for Images, "A" for Audio, "F" for Fullscreen, "C" for Current Media
Cleaned up SubTypes from projects
Added public SerializeKey method to Key
Using Key methods for (de-)serialization