Frontend refactor and backend support for cached page lists. * Page lists like orphans or broken redirects are now cached in the DB, and invalidated when something changes. * Refactor the frontend code to make it easier to add lots of other such page lists. Reskin the admin dashboard a bit. * Add new "broken redirects" list for testing new code.

Flask==0.10.1
Flask-Login==0.2.10
Flask-Script==0.5.1
Jinja2==2.7.2
Markdown==2.2.1
Pygments==1.6
SQLAlchemy==0.9.3
Whoosh==2.5.5
colorama==0.2.7
pytest==2.5.2
repoze.lru==0.6
python-hglib