Merge pull request #197 from triplem/master

Fix logging for app.js and main classes
Make logging work again
Merge pull request #198 from triplem/winston-config

Make logging work again
changed to new logger
more tests
typo - or better: 'thinko'
separated the groups to subscribe on member/edit

also made some methods static in group
wow, big oopsi
minor refactorings
Merge pull request #199 from leider/master

small stuff only
hotfix for grouptable in administration