Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/javascript/mastodon/features/compose/components/poll_form.js`
  conflict because of the poll option limit being different than upstream's

app/javascript/styles/mastodon/components.scss

@@ -392,6 +392,7 @@
   .autosuggest-input,
   .spoiler-input {
     position: relative;
+    width: 100%;
   }
 
   .spoiler-input {