Core/Player: Check Player race and class on login

Don't allow login for Players with bad race/class combination to avoid any further crash later.
DB/Locales: Official localizations of `item_template` for koKR, zhCN, zhTW and Spanish (MX) locales
Core/Movement: Fixed an exploit allowing players to crash the server by using modified movement packets
DB/Locales: Official localizations of `broadcast_text` of kokR, zhCN, zhTW and Spanish (MX) locales
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4

Conflicts:
	src/server/game/Server/WorldSession.cpp