Changes stealth field material.

Fix reapers can't use stealth mechanic.

fix a bug where the stealth gamestate wasn't resetting properly on tactical begin.

Fixed broken config.
Fixed reaper running animation applying on stealth units.
Reveal chance hud is only display if its a valid stealh ability.

Fixed a bug that caued the reaper scoped ui wasn't closed properly when reapers where not concealed.