Demo Day Update 2

Bugfix:

• Units will now restore their health and ammo while inside their spawn field, as intended.

Changes:

• The camera can now be panned by dragging the minimap, in addition to jumping to the clicked location.
• Respawning units can now be selected and assigned a rally point.  Respawning and active units can be selected at the same time, but when a unit is destroyed, it will deselect.
• The muzzleflash is slightly larger and hopefully more noticeable.