[229] "Last updated" improvement - Major sort out, with tests now passing. Appears to work, displaying the new modification date, sorting by it in the search results and bin/initial_last_major_modification.py sets the existing values. Install at end of day, restart SOLR, add the new dgu_package_updates plugin, run script overnight.
Merge branch 'master' of github.com:datagovuk/ckanext-dgu