Added room field to meeting class
Merge branch 'model-room' of github.com:Gruppe01/EXPHIL03 into model-meeting

Conflicts:
	src/model/Meeting.java
Merge branch 'master' of github.com:Gruppe01/EXPHIL03 into model-meeting
Added getNextID method.
Merge pull request #33 from Gruppe01/model-meeting

Added getNextID method