add references to parent directories + bug fixes
Merge branch 'master' of git://github.com/softwerkskammer/NeuePlattform-Implementierung
Merge pull request #157 from dpolivaev/master

Add links to parent directories + bug fixes in file browser
Merge pull request #156 from leider/master

!!!KOMMENTAR LESEN!!! - Activities haben jetzt explizite URLs
Minor update in UI
Merge remote-tracking branch 'upstream/master'