Merge pull request #53 from dvicini/master

now answering invites let them disappear if they were declined. Also now...
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Merge branch 'master' of https://github.com/countschokula/ese2013-team6 into countschokula-master

Conflicts:
	src/MensaUniBe/src/com/ese2013/mub/AnswerFriendRequestListener.java
	src/MensaUniBe/src/com/ese2013/mub/AnswerInviteListener.java
Merge branch 'master' of https://github.com/dvicini/ese2013-team6