Better control mapping

There are no more multiple control maps, instead you can simply map multiple inputs to one PSP key. 

Replaces the ugly control mapping screen with a cleaner list-based one. It's not super pretty either but at least it doesn't look completely broken and is reasonably usable.

Controls are now stored separately in controls.ini , by request.

X360 analog triggers are now treated as such so they can be mapped to the analog stick if desired.