Merge commit 'dc09c10fa8cc9230bf14e48d790c8f0c26043f8f' into glitch-soc/merge-upstream

Conflicts:
- `.rubocop_todo.yml`:
  Upstream re-generated the file, while glitch-soc has a specific ignore
  for some file.
  Updated the file as upstream did and kept our extra ignore.
- `config/webpack/shared.js`:
  Upstream added a plugin, but our files are pretty different.
  Added the plugin as well.
- `spec/helpers/application_helper_spec.rb`:
  Upstream refactored tests, but part of them were different because
  of glitch-soc's theming system.
  Applied the refactoring to glitch-soc's change.

spec/models/report_filter_spec.rb

@@ -23,8 +23,7 @@ describe ReportFilter do
     it 'combines filters on Report' do
       filter = described_class.new(account_id: '123', resolved: true, target_account_id: '456')
 
-      allow(Report).to receive(:where).and_return(Report.none)
-      allow(Report).to receive(:resolved).and_return(Report.none)
+      allow(Report).to receive_messages(where: Report.none, resolved: Report.none)
       filter.results
       expect(Report).to have_received(:where).with(account_id: '123')
       expect(Report).to have_received(:where).with(target_account_id: '456')