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

Conflicts:
- app/models/status.rb
- db/schema.rb

Both conflicts are caused by us having extra database columns.

app/javascript/styles/mastodon/components.scss

@@ -105,6 +105,10 @@
       border-color: lighten($ui-primary-color, 4%);
       color: lighten($darker-text-color, 4%);
     }
+
+    &:disabled {
+      opacity: 0.5;
+    }
   }
 
   &.button--block {