Update www/py-flask-login to 0.2.3.

No changelog provided; several bug fixes, including compatibility with
Werkzeug-0.9 and Flask-0.10.
Update www/py-flask-frozen to 0.11.

Version 0.11
~~~~~~~~~~~~

Released on 2013-06-13.

* Add Python 3.3 support (requires Flask >= 0.10 and Werkzeug >= 0.9)
* Drop Python 2.5 support
* Fix `#30 <https://github.com/SimonSapin/Frozen-Flask/issues/30>`_:
  :func:`relative_url_for` with a query string or URL fragment.
Updated www/py-flask-login to 0.2.3.
Updated www/py-flask-frozen to 0.11.