fixed problems with battleground restarting during game.

Implement daily quests support

restore correct mail delivered/unread mail counting at character loading.

Prevent quest rewarding with too short money for pay money collecting objective

allow single creature kill/cast/talk (and gameobject cast) counted for many quests if quest have same objective.

prevent crash at logout with trade dialog open.

check spell unit targets not before each effect apply but before all effects apply. This will prevent apply first spell effect immunity/etc to targets for second spell effect. Must restore paladin magic shields for example.

cast second passive spell for both bear forms.

Fixed problem with battleground join as group invitation

Correct boss immunities to all World Boss rank creatures.

Do not allow player to join more times same arena queue

Fixed crash, when removing offline player from bg queue