Changed the naming conventions (read more)

I've changed some naming concentions in the lua APIs. I've also made a few
other tweaks, like region_pager_api.cpp delegating to the passed
RegionPager object. This won't explicitly run, becuase there's still a few
more changes needed.
All current lua hooks are being called
Fixed CreateRoom()'s return type
Minor tweaks after a failed attempt at metatables
BUG: Segfault from lua? in region_pager_api.cpp:createRegion()