Core/SAI: Added SMART_ACTION_CALL_KILLEDMONSTER log for has already spell kill credit
Scripts/HoL/HoS: changed some bosses to optional, doors are always open
Scripts/HallsOfStone: Sjonnir, some improvements
- rewritten to BossAI
- added spawn ordered by percent, according to official data

Closes #10702

Signed-off-by: joschiwald <joschiwald@online.de>
Merge pull request #8 from TrinityCore/master

update