Merge commit '144a406d332b034caa812ade2629df03ed4898d7' into glitch-soc/merge-upstream

Conflicts:
- `app/views/layouts/application.html.haml`:
  Upstream removed the `crossorigin` attribute from `preload_pack_asset`.
  Glitch-soc had different calls to `preload_pack_asset` because of the
  different theming system.
  Ported the change.
- `app/views/layouts/embedded.html.haml`:
  Upstream removed the `crossorigin` attribute from `preload_pack_asset`.
  Glitch-soc had different calls to `preload_pack_asset` because of the
  different theming system.
  Ported the change.

config/webpack/shared.js

@@ -60,6 +60,7 @@ module.exports = {
     chunkFilename: 'js/[name]-[chunkhash].chunk.js',
     hotUpdateChunkFilename: 'js/[id]-[hash].hot-update.js',
     hashFunction: 'sha256',
+    crossOriginLoading: 'anonymous',
     path: output.path,
     publicPath: output.publicPath,
   },