astakos: Fix license of astakos/admin/users.py
astakos: Fix pep8/pyflakes issues
deploy: Remove version dependency to curl
admin: Fix typos in admin tests
admin: Fix typo in deleted entries tooltip

Remove the "None." string that appeared on every category (besides
projects) due to a bad template tag. Also, add the tooltip in a
separate html file for easier editing.

Fixes apyrgio/synnefo#288