DB/SAI: Missing event flags now added

Closes #9668
DB/Loot: Insert Frozen Orb into The Prophet Tharon'ja's loot template

Closes #9605
DB/Conditions: add correct conditions to Lokhtos Darkbargainer's shop

Closes #9594
DB/Loot:

Update loot for Scarab Coffers in AQ (related to issue #9638)
Update loot for Axtroz (related to issue #9610)
DB/Gameobject: Add missing template for Silver Covenant Banner (202193)

Closes # 9080
DB/SAI: fix runtime errors and some other stuff. see issue #9667
Merge remote-tracking branch 'tc/master' into wotlk