Unit Tester

Many minor bug fixes (such as upgrades not working correctly and some resources counts being displayed incorrectly)

Added a pause button, will pause units but you may still issue orders.

Added a new terrain, 'Ramp', in addition to the standard and the small choke.

Added a visibility button, where you can switch between only seeing what Red can see, Blue can see or both can see.

Made some modifications to the base code so creating large numbers of units will not cause error reports anymore.