Unit Tester

Many minor bug fixes (such as upgrades not resetting!)

Set all upgrade buildings to just two per race, per player.

Added a new terrain, 'Small Choke', in addition to the standard.

Easier ways to get creep: Creep Tumors don't require creep to build (both Queens and the Zerg Builder can create Creep Tumors.)

Units will be now set to control groups, 1 is the left player, 3 is the right player.

When you have created a lot of units at once, at some amount it'll display an error message but it doesn't mean anything important.