Added finished chalenge activity
Merge branch 'master' of https://github.com/Maddoc42/Ferienakademie2014Client

Conflicts:
	nEVERrEST/app/src/main/java/de/ferienakademie/neverrest/view/AfterChallengeDetailViewActivity.java
	nEVERrEST/app/src/main/java/de/ferienakademie/neverrest/view/FinishedChallengeActivity.java
Merge branch 'master' of https://github.com/Maddoc42/Ferienakademie2014Client