* 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
The beta build currently has a couple of UI elements (the horizontal
logo and the app header) set to "dark mode", even though nothing else
in our UI supports dark mode yet. These styles have been removed. We
should make the entire UI support dark mode all at once at a later
date.
Also the horizontal logo used for beta was named incorrectly; the dark
and non-dark logos were swapped. They have been switched back so that
the logo that ends with `-dark` is for dark mode.
