implemented usergroup permissions checks. - each user who has now explicit or inherited permissions can create usersgrous - user is automatically an admin of that usergroup, and can manage it
"""Various utilities to work with Python < 2.7.Those utilities may be deleted once ``vcs`` stops support for older Pythonversions."""importsysifsys.version_info>=(2,7):unittest=__import__('unittest')else:unittest=__import__('unittest2')