fix exception handling

Conflicts:
	aNewJKUApp/src/main/java/org/voidsink/anewjkuapp/Analytics.java
fix npe

fix npe while loading lvas

Conflicts:
	aNewJKUApp/src/main/java/org/voidsink/anewjkuapp/kusss/KusssHandler.java
fix npe

fix npe while loading exams