Instead of just including supported versions, include older versions of
the docs as well, and properly assign priorities by:
* For current docs, always assign priority 1.0
* For any other docs, start at 0.8 for the latest and decrease priority
by 0.1 for each version, until we reach 0.1.
This should restore the ability to search for old versions of the
documentation (they still get proper priorities when searching for
suburls, which currently returns no hits at all) while maintaining
a strong priority for the newer versions.
This makes it possible to figure out when the docs were actually
loaded, since developer docs don't carry a version number. This is
actually going to be the docs *load* timestamp, and not build timestamp,
but they should be close enough together that it shouldn't matter.
Fixes#108
This allows all models inherited from PgModel to specify which
URLs to purge by either setting a field or defining a function
called purge_urls, at which point they will be purged whenever
the save signal is fired.
Also implements a form under /admin/purge/ that allows for manual
purging. This should probably be extended in the future to show
the status of the pgq slaves, but that will come later.
Includes a SQL function that posts the expires to a pgq queue. For
a local deployment, this can be replaced with a simple void function
to turn off varnish purging.
Each module now contains a struct.py file that will return all
the URLs that it can generate (yes, this is a small break of the
abstraction of url.py, but we've broken that elsewhere as well),
and also which search-engine-weight (0.1-1.0) that this URL should
be given.
