This replaces the previous ugly hack where beta versions had a negative number
as latestminor, giving a much cleaner model.
Requires SQL:
ALTER TABLE core_version ADD COLUMN beta boolean NOT NULL DEFAULT 'f';
ALTER TABLE core_version ALTER COLUMN beta DROP DEFAULT;
(Yes, we really need to move to something that can do automatic migrations)
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.
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.
