Refactoring to not better use Flask, only when needed: - command-line utility is using plain `argparse`. - no Flask app created unless we want to run a server. - split all commands into sub-modules. - do more initialization stuff in the `WikiParameters`. - make `Wiki` init as cheap as possible. - one `Wiki` instance now created per request.

Flask==0.10.1
Flask-Login==0.1.3
Flask-SQLAlchemy==1.0
Flask-Script==0.5.1
Flask-Testing==0.4
Jinja2==2.6
Markdown==2.2.1
PyYAML==3.10
Pygments==1.5
SQLAlchemy==0.8.3
Werkzeug==0.8.3
Whoosh==2.4.1
amqp==1.3.3
argparse==1.2.1
celery==3.1.5
nose==1.2.1
pybars==0.0.4
python-hglib==1.0
twill==0.9
wsgiref==0.1.2