This commit narrows down the list of fonts we offer
in our setup wizard and simplifies things to only
show a single font dropdown. This selection will then
set the `base_font` and `heading_font` site setting to
the same value.
For existing sites that may have set different values,
we will still show 2 dropdowns when visiting the wizard.
We are also changing our default font to the more modern
selection Inter, replacing Arial. Arial is very dependent
on system installed fonts, whereas Inter we can package
to everyone in Discourse.
Finally, for existing sites that have not changed their default
from Arial, we will keep that value via a migration so we do
not surprise site owners with a completely new font.
78a857931c
