Add sorting by update date to the plugin page

Knowing when a plugin you use updated (or seeing when a new plugin releases) is a major pain atm.
Allowing to sort the plugin page by latest update will greatly improve the situation.

Start by locating the plugin page and its existing sorting or listing entry point in the repository, then inspect how plugin update information is exposed. The work is done when the page can sort plugins by latest update and the ordering is clear for both recently updated and newly released plugins.

Written by the indexing model from the issue text.