eos-updater: Show the ‘Learn More’ link for larger updates if provided
If eos-updater provides a URI for the release notes of a pending update, show it. It appears as a ‘Learn More’ link in the upgrade banner.
This depends on a new property in eos-updater, added in https://github.com/endlessm/eos-updater/pull/319. It should be a no-op if that property is not present.
Signed-off-by: Philip Withnall pwithnall@endlessos.org