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.

server/rooms/room_mgr_api.hpp

@@ -24,7 +24,7 @@
 
 #include "lua/lua.hpp"
 
-#define LUA_ROOMMGRLIBNAME "roommgr"
-LUAMOD_API int luaopen_roommgrapi(lua_State* L);
+#define TORTUGA_ROOM_MGR_NAME "RoomMgr"
+LUAMOD_API int openRoomMgrAPI(lua_State* L);
 
 #endif