This reverts commit b4e8320231.

* Plugins (and BSAs) are now also in YAML files which define their
  ordering.
* Data paths and their ordering is now governed by a YAML file that
  contains an array of mod names in the order intended for the data path
  load order.
* The seed script as it is in the repo is now used in the deploy;
  previously a duplicate templated copy had been used.
* The cfg generator function has been updated to support the new real
  ordering systems as well as some new lists.  Some code that was used
  twice is now a function (_get_data_paths).
* Added some new lists, for fun.
* Several lists have been updated, mod additions to come in the next
  commit following this.
* Added query managers for new lists.
* The 'mod' field on DataPathLoadOrder should be a ForeignKey after
  all..
* The sitemap now contains *every* page on the site, including list
  steps.
* Many text changes and additions to the CFG Generator HTML, and other
  templates.
* Test updates to go along with all of the above.