Added logic that sorts the results when using the sorting selector
Sort by reversed effective date the forward and backword relations by default
Refs #13830 EEA; Changed the following:
- Removed the sorting plugin logic since we can give the sorting logic
  to the sort method on the jquery collection
- Removed metadatata div and added the metadata as data attributes on
  the listing objects
- Added code to sort the elements by title and effective date both in
  the a general context but also that of EEA
Refs #13870; added upgrade step and history entry for given ticket
Removed options that can be added by default from jsregistry.xml
Merge pull request #3 from collective/sorting

Sorting of related items