DB/Gossip: Add some missing go gossip.
Core/Auras: Removed an unnecessary check.

mode is already checked in the first lines of SPELL_AURA_PHASE's handler.
DB/Creature_text: Add some missing text to db.
DB/Creature_text: Missing ; from previous commit
Core/Account: Move AccountMgr back to singleton
DB/Misc: Proper faction for npc Brann Bronzebeard.

This makes him assist in combat and now the mobs that spawn attack him.
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4