Revert "Temporarily commented out override directives."

This reverts commit 6db727c60c01264dc9a9c209c5b335da8f53cd64.

Conflicts:
	src/Bindings/PluginLua.h
	src/Blocks/BlockFire.h
	src/Generating/ChunkGenerator.h
	src/LoggerListeners.cpp
	src/Mobs/Components/AIAggressiveComponent.h
	src/Mobs/Monster.h
	src/OSSupport/IsThread.h
	src/Protocol/Authenticator.h
	src/UI/SlotArea.h