update_status 5.x-2.2

Changes since 5.x-2.1:

• #216750 by dww: Fixed an important bug where releases from higher branches than the currently installed version were not ignored in all cases. This resulted in bogus security warnings and faulty information being printed about development snapshot releases (#216309).
• #216366 by dww: Restored ability to ignore projects that are missing security updates or have been unpublished/revoked. This bug was introduced in version 5.x-2.1 via #197186.
• #216632 by webernet, dww: Improved accessibility of the available updates report by adding alt tags and title attributes to the icons.
• #217771 by dww: Added some CSS to prevent wrapping of release dates when viewing the available updates report with a narrow window.