DDBNEXT-70 Fixed serverside session creation by "flash" object in grails
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next.git into DDBNEXT-70
Changed the System.out.println in the _Event.groovy to log4j messages
DDBNEXT-70: Fixed serverside session creation and added SessionListener
to prevent further sessions