Added a tutoring text.
Implemented some simple (but not very good) tutoring that changes
when the user interacts and shows that one knows how to do it.
Made cursor keys global since it will be easier when used in many
prototypes and i don't think it will hurt anyone.
Solves the problem regarding the tutoring doesn't reload properly
when the level reloads.
Merge branch 'tutoring' of github.com:samni698/SuperHappyFunTime

Conflicts:
	Character.js
	Level.js
	Level1.js
Fixed the new level to fit with the tutoring