Cleaned up the mapflag system (#2943)

* Created setter and getter functions.
* Adjusted all calls to use these functions.
* Converted mapflags to C++ map container.
* Converted drop_list to vector.
* Converted skill_damage ERS into vector and increased limit from UINT8 to UINT16.
* Cleaned up several functions to be more dynamic to reduce redundancy that was all over the place.
* Renamed nosumstarmiracle to nosunmoonstarmiracle.
* Adjusted skill_damage mapflag to use proper defined constants.
* Refactored map index into a vector.
Thanks to @Lemongrass3110 for a lot of help and @secretdataz!

src/map/party.cpp

@@ -791,7 +791,7 @@ int party_changeleader(struct map_session_data *sd, struct map_session_data *tsd
 			return -3;
 		}
 
-		if ( map[sd->bl.m].flag.partylock ) {
+		if ( map_getmapflag(sd->bl.m, MF_PARTYLOCK) ) {
 			clif_displaymessage(sd->fd, msg_txt(sd,287));
 			return 0;
 		}