Started work on a simple shake challenge
Added challenge to factory and enum
Added licence and Javadoc
Merge branch 'development' into shake-challenge

Conflicts:
	application/src/se/chalmers/dat255/sleepfighter/challenge/ChallengeFactory.java
	application/src/se/chalmers/dat255/sleepfighter/model/challenge/ChallengeType.java
Merge branch 'development' into shake-challenge

Conflicts:
	application/src/se/chalmers/dat255/sleepfighter/challenge/ChallengeFactory.java
	application/src/se/chalmers/dat255/sleepfighter/model/challenge/ChallengeType.java
Added PrototypeDefinition
Save state to bundle
Custom progress bar
Size adjustments
String in localizable xml
Register sensor listener in onResume
Merge branch 'development' into shake-challenge
Added name and description for shake challenge
Merge branch 'shake-challenge' into development