gtools: pep8 fixes

* pep8 fixes in setup.py of snf-cyclades-gtools
* Update date on copyright notice
cyclades: Remove obsolete dependencies

* Remove python-prctl as a dependency from snf-cyclades-gtools
* Remove pycurl as a dependency from snf-cyclades-app
* Update date on copyright notice on setup.py
astakos: pep8 fixes

* pep8 fixes on astakos views
astakos: Remove obsolete dependency inflect

* Remove inflect as a dependency from snf-astakos-app
* Remove unused code that imported inflect

Closes #20