initial changes for group feature
request membership of group added
'quit' membership of group added
refactored user perspective for membership management
accept method from group perspective for membership management
membership management methods from group perspective & refactoring
merged registration branch to saas/group branch
removed unnecessary\/failing spec
bump up ruby\/rails version, cleanup
added Gemfile.lock
removed cucumber config and typos, added/cleaned gems
Merge branch 'master' of github.com:netzfisch/teamorga