Implemented unit tests for 'hawat.blueprints.groups' module.

lib/hawat/blueprints/groups/forms.py

...hawat/blueprints/groups/templates/groups/creatupdate.html

...awat/blueprints/groups/templates/groups/rejectmember.html

lib/hawat/blueprints/groups/test/__init__.py

lib/hawat/test/__init__.py

lib/vial/test/__init__.py