Added previously activated card as the command target for Activate command;
Completed the definitions of two incomplete behaviors.
Merge branch 'master' of https://github.com/galaxyyao/TouhouGrave

Conflicts:
	trunk/TouhouSpring/Game/Commands/ActivateAssist.cs
	trunk/TouhouSpring/THSv0.5/Behaviors/Passive_Aura_Offense_NAttack.cs
	trunk/touhouspring/THSv0.5/Behaviors/Passive_AttackGrowth.cs