Some documentation additions within player.h and Creature.h
Additional changes and requests as by @subv
Fixing some Engrish.
Additional fixes and some clean ups
Several todo corrections for documentation
Merge pull request #9299 from Ascathor/master

Few documentation changes
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore.git
Merge branch 'master' into NPCBots
fix all warnings
Merge branch 'master' into NPCBots