DB/Creature: Fix voidwalker and felhunter summon
Core/Character: Implement Warlock Pet Customization
Core/Gameobject: Warlocks now stand in front of barbershop chair (better for pet customization)
Core/Battlepay: Implement Multiple Quest Reward product type
DB/BattlePay: Added "Unlock All Warlock Pet Customization Product" & Rename "Achievement" group to "Customizations"
Core/Player: Fix pet resummon on login
Core/Pet: Recalculate Pet Summoning Position
Core/Spell: Play Blizzlike Visual for Warlock Pet Summoning
Core/Creature: Update Felhunter and Felguard PetEntry
Core/Pet: Fix warlock pet spellpower calculation
Core/Pet: Warlock pets now use Energy instead of Mana