core: Continue PieCrust3 refactor, simplify pages. The asset pipeline is still the only function pipeline at this point. * No more `QualifiedPage`, and several other pieces of code deleted. * Data providers are simpler and more focused. For instance, the page iterator doesn't try to support other types of items. * Route parameters are proper known source metadata to remove the confusion between the two. * Make the baker and pipeline more correctly manage records and record histories. * Add support for record collapsing and deleting stale outputs in the asset pipeline.

cffi==1.5.0
colorama==0.3.3
compressinja==0.0.2
Flask==0.10.1
Flask-Login==0.3.2
Jinja2==2.7.3
Markdown==2.6.2
MarkupSafe==0.23
paramiko==2.0.0
Pygments==2.0.2
pystache==0.5.4
python-dateutil==2.4.2
PyYAML==3.11
repoze.lru==0.6
smartypants==1.8.6
strict-rfc3339==0.5
textile==2.2.2
Unidecode==0.4.18
Werkzeug==0.10.4