Added example triggers to the gamma crux map yaml file.
Changed the trigger class to use a list instead of an array.
Updated the test trigger.
Updated the map script file.
Merge branch 'bleed' of https://github.com/veniora/OpenRA into bleed

Conflicts:
	OpenRA.Game/MissionScripting/Trigger.cs
	mods/ra/maps/gamma-crux-deathmatch/map.yaml
Merge branch 'bleed' of https://github.com/veniora/OpenRA into bleed