Fixed bug so now ResourceAmount only increments for the kind of MULE
placed on the tile.
Edited tester, but since Store and other classes are so intertwined with
the GUI, I abandoned this effort.
Production calculation only happens for the particular type of MULE (if
any) on a Tile.
Working on using GameData
Everything tied to GameData
GameData core is fairly stable
Moved ImageLoader classes to IO package
adding a message label to MainGameWindow to be used for displaying information like random events
Adding save point functionality
Implementing save points
MainGameMenu now functions statically
Merge branch 'master' into 040f__M8_InGameMenu
Save points defined
Integrating message bar
integrating message panel
Merge branch '062f__M9_Save_Load' of
https://github.com/msnorth/cs2340_mule.git into 062f__M9_Save_Load

Conflicts:
	edu/gatech/cs2340/ui/InGameMenu.java
	edu/gatech/cs2340/ui/MainGameWindow.java
Separated View and Controller for the InGameMenu.