Merge commit '7f471e70c0e1cc106747634d20f173a68a9272d7' into glitch-soc/merge-upstream

Conflicts:
- `app/views/layouts/mailer.html.haml`:
  Conflict caused by glitch-soc's theming system.
  Used glitch-soc's path for the mailer pack.

app/javascript/styles/fonts/inter.scss

@@ -0,0 +1,8 @@
+@font-face {
+  font-family: Inter;
+  src: url('../fonts/inter/inter-variable-font-slnt-wght.woff2')
+    format('woff2-variations');
+  font-weight: 100 900;
+  font-style: normal;
+  mso-generic-font-family: swiss; /* stylelint-disable-line property-no-unknown -- Proprietary property for Outlook on Windows. */
+}