(cherry picked from commit 9d59d038f8b09ed036448e755cb0b102396a4ca1) Conflicts: sql/updates/world/2015_04_05_07_world.sql src/server/game/Globals/ObjectMgr.cpp src/server/game/Globals/ObjectMgr.h Core/GameObjects: fixed typo and logic (0 is a valid invisibility type) (cherry picked from commit 23e8a3ce2928458649d94408d5deffb67339b1d6)