Core/Transports: Fixed creatures micro movement on transport when attacking something (fixes interrupting melee animation)
Core/Misc: Fix some static analysis issues

Add some asserts and additional NULL checks as sanity checks.
[TW267] - Core/Scripts: Clean up Frost Beacon marker after the player has already been tombed (should lesser the damage from the reseting marker issue)
[TW268] - Core/Mechanics: Fix up a crash and reimplement the Rune Grace Period patch for testing purposes
[TW269] - Add unstaged file from previous commit
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb
更新
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb

Conflicts:
	src/server/game/Entities/Player/Player.cpp
	src/server/game/Entities/Player/Player.h
	src/server/game/Entities/Unit/Unit.cpp