Map event handler prototype

This has got a prototype of almost everything you need to use the Map and MapFactory classes, as well as validation "events" for given cells.  A demo can be seen be clicking on the "Map test..." button in the menu screen.

Note the CTRL+L/M/E/G  key event handlers that allow you to see the grid, items, obstacles, and portals.  Also, the CTRL+MOUSE_CLICK on a grid cell will validate that cell.

A great test is to CTRL+CLICK on a portal, and note that it takes you to a new map (although it has the same image file... get a store image from Bilal to change this)