Removed MonsterManager's Singleton status, RoomData now has mgr members

RoomData now has monsterMgr and waypointMgr members, so that it can
compare it's characters to the monster & waypoints, etc.

RoomManager has been updated. It now has a database reference, which is
passed to the monsterMgr of new rooms. The room API also has functions
which expose these managers to lua.

server/server_logic.cpp

@@ -105,6 +105,7 @@ void ServerApplication::Init(int argc, char* argv[]) {
 	characterMgr.SetDatabase(database);
 
 	roomMgr.SetLuaState(luaState);
+	roomMgr.SetDatabase(database);
 
 	std::cout << "Internal managers initialized" << std::endl;
 
@@ -201,7 +202,6 @@ void ServerApplication::Quit() {
 	accountMgr.UnloadAll();
 	characterMgr.UnloadAll();
 	clientMgr.UnloadAll();
-	monsterMgr.UnloadAll();
 	roomMgr.UnloadAll();
 
 	//APIs