Engine:
* Added LUA scripting support for trainings (and maybe soon) scenarios/missions
* Converted Shotgun and Bazooka Training to LUA
* New dependency: LUA 5.1
* New Mission Objectives window
* Extended default keybinds for non-iPhone builds
* NOTE: Script function names etc. might change soon so don't work too hard on your own missions (for now)! This is experimental!
Frontend:
* Added support for new training maps/LUA scripts
