Core/BG: Corrected data sent in SMSG_BATTLEFIELD_STATUS packet.

*should* close #7994
Core/DataStores: Changed index on CharStartOutfit.dbc to allow lookups directly using race/class/gender combo instead having to iterate entire store to find the proper entry
Core/Conditions: Implement CONDITION_UNIT_STATE = 21
DB/Conditions: Convert shadowstep spell script in conditions
DB/SAI: Some SAI for aq20. Closes #8866
DB/SAI: Fix a couple errors. Closes #8839
DB/Scripts: Fix a few SAI errors.
Merge branch 'master' of github.com:TrinityCore/TrinityCore into mmaps