Improved Map Properties

-(TileManager) Changed the order in which scripts get added
-(LandManager) Added the option to determine if a building should be
placed.
-(MapProperties) removed the constants, must set the properties for each
map in the inspector.
-(MapPropertiesHelper)
-Added the backend code to determine if buildings should spawn.
-#pragma warning disabled

Minor code fix:
-(ItemDropManager)Forgot to initialize null otherwise item drop would be
the same as previous if none was chosen.