Remove use of flags UNIT_FLAG_NON_ATTACKABLE and UNIT_FLAG_REMOVE_CLIENT_CONTROL
Replace with correct one, UNIT_FLAG_UNK_31, imunity part now is fully handled by auras
Fix a problem with bugged orientation while casting SPELL_SYNCH_HEALTH
Use std::crono notations
Remove unneeded code
Move one spell_linked_spell to SpellScript
Fix Loot issue
Fix Possible Crash
(cherry picked from commit f1639a30ba1f52370c128585d1670af18e48e799)
Rename 2016_99_99_99_world.sql to 2016_06_26_00_world.sql
(cherry picked from commit fdf0092ac24a27f1e95ffeb4f0257404998980ee)