Added competitive mode option and console command, disables these abilities:

Marine: Exos/Mines/FT/GL/Scan/Catalyst/EMP/FastReload
Alien: Onos/Tier 3
Make onos/gorge unaffordable, disable Ink upgrade
Fix kill counting twice
Show Stomp secondary icon on the client
Tier 2/3 upgrade fixes
Final fixes for T2/T3 abilities
Fix missing Fast Reload from Marine buy UI
Merge remote-tracking branch 'upstream/master'