Next part of town configuration:

- town screen is mostly implemented, has some minor issues
- factions are now separate from towns, neutrals have faction with id=9
- more constants to GameConstants: town-specific buildings, strings for terrains and resources
- replaced most access to builtBuildings with isBuilt() method
- replaced id's with enums for town subtype and buildings id's

lib/CModHandler.h

@@ -83,6 +83,7 @@ public:
 		int CREEP_SIZE; // neutral stacks won't grow beyond this number
 		int WEEKLY_GROWTH; //percent
 		int NEUTRAL_STACK_EXP; 
+		int MAX_BUILDING_PER_TURN;
 		bool DWELLINGS_ACCUMULATE_CREATURES;
 		bool ALL_CREATURES_GET_DOUBLE_MONTHS;