This reverts commit f09ab8889148c406551dea1643966e3331fde4aa, reversing
changes made to effc761e0ee4ea7ffb77f275b5ed650a7098d6f8.
This is being temporarily reverted to make it easier to release an
urgent fix for v10.15.1.
* Update support links for Flask
* Disable 'prefer-const' in code fence linting
* Add bespoke home footer for Flask and update logic
* fixup! Add bespoke home footer for Flask and update logic
* Fix code fence lint failure
* Fix support request link in account menu
* Fix unit test failure