Switch to SDL &  Rename

-Now using SDL for window creation and input.
-No longer using the prefix T for a lot of types, as all types are
within the engines namespaces
-Added 64bit configuration in VS ( Not Yet Tested )
-Updated .gitignore to exclude the external folder ( will have to have
some way of dealing with this later )
Updated naming in Try macro
Merge remote-tracking branch 'origin/master'

Conflicts:
	ThorEngine/ThorEngine/Core/Entities/ComponentFactory.h
	ThorEngine/ThorEngine/Utils/TArray.h