DB/SAI: Remove instance flags for creatures in battlegrounds

Otherwise they would not work and create runtime warnings on initialization
Core/Units: Removed most calls to SendMovementFlagUpdate for creatures
Scripts/Icecrown Citadel: Fixed Blood Queen Lana'thel flight phase

Closes #8759
DB/Conditions: make Frenzyheart fury only affect players

Closes #6408
DB/SAI: add SAI for The Black Knight's Curse

Closes #7402
DB/SAI: add SAI for the quest Fozruk, Feeboz, Znort and Sleeby

Closes #7920
DB/SAI: add SAI for Wretched Skulker/Bruiser/Husk

Closes #10034
DB/Loot: Gnomish Grenades have Very High drop chance

Closes #10086
DB/Player: add Wooly Mammoth & Armored Brown Bear to factionchange

Closes #10098