Allow no group id before creating;
make use of group list during user creation
Init restdoc
We need to process rest request with params grouplist
Change error handling for wrong params
Redirect correctly; show name if user exists
Fix handling group list
Fix handling of groups when creating a new user
Update restdoc
Finished user restdoc'
ADd group docs
Fix rendering of rest api and other minor fixes
Dasherize are arguments to a different method
Escape where needed
Corrections from review
Merge pull request #76 from vmoravec/users-restdoc

Users module REST api + restdocs bnc#790161