Conflicts:
- `spec/requests/api/v1/timelines/tag_spec.rb`:
Upstream refactored this file, while we had a change to switch a default setting.
Updated as upstream did.
- `spec/views/statuses/show.html.haml_spec.rb`:
Upstream refactored this file, while we stubbed different methods.
Updated as upstream did, and updated the stubs accordingly.
Conflicts:
- `app/helpers/theme_helper.rb`:
Conflict caused by our different theme systems.
Ported upstream's changes.
- `app/models/account.rb`:
Upstream basically made a change we already made.
Moved constant declaration to match upstream.
Packs are now loaded from views, just like upstream, and are
identified by their filenames. The definition of `theme.yml` has
changed as such:
- `pack_directory` is now required
- `pack` is now unused
- `signed_in_preload` has been introduced
