* Allow command to mind controlled unit attack target at client. Rename related flag to UNIT_FLAG_PLAYER_CONTROLLED.
* Move code for pet action bar remove at client side to new function Player::RemovePetActionBar
* Not allow cast spells with SPELL_AURA_MOD_POSSESS and SPELL_AURA_MOD_POSSESS_PET by non-players and simplify related code base at this.
Also send pointer to AI constructors ans mark constructors as explicit.
This changes allow move now some generic often used AI code to CreatureAI helper functions.
Added checking global cooldown for pet spell casting triggered by master.
Optimized PetAI::UpdateAI:
- Removed obsolete victim_guid as combat check.
- Stop pet combat when pet die in JustDied(Unit*) method.
- Optimized autospells selection and casting.
Signed-off-by: ApoC <apoc@nymfe.net>