Fix #898: Pickup folder.png and folder.jpg files for cover art when importing from CLI

Closes #898

See merge request funkwhale/funkwhale!895

See #872: banner setting

See merge request funkwhale/funkwhale!893

See #872: new "terms of service" settings

See merge request funkwhale/funkwhale!894

Fix #904: Fixed a responsive display issues on 1024px wide screens

Closes #904

See merge request funkwhale/funkwhale!890

Resolve "Search playlist unexpectedly triggers keyboard sortcut commands"

Closes #902

See merge request funkwhale/funkwhale!891

Fix issue with search transition being purged

See merge request funkwhale/funkwhale!892

Resolve "Broken 'Less listened' Radio in develop version"

Closes #912

See merge request funkwhale/funkwhale!889

Resolve "Changes to CSS have broken Dark Theme"

Closes #916

See merge request funkwhale/funkwhale!888

Reduced CSS size by 30% using purgecss

See merge request funkwhale/funkwhale!887

See #890: Documentation and release notes

Closes #890

See merge request funkwhale/funkwhale!886

Review fixes for report notifications not included in !880

See merge request funkwhale/funkwhale!885

See #890: web UI and email notifications on new reports

See merge request funkwhale/funkwhale!880

See #890: display number of report and link to associated reports on account, artist, album, track and library moderation page

See merge request funkwhale/funkwhale!883

See #890: expose number of reports linked to tracks, albums, libraries, accounts and artists via the /stats route

Fixed broken external HTTPS request under some scenarios, because of missing PyOpenSSL

See merge request funkwhale/funkwhale!884

Ensure selected locale is not reset to browser default when refreshing app

See merge request funkwhale/funkwhale!879

Playlist embed

See merge request funkwhale/funkwhale!878

See #890: minor improvements to report UI

See merge request funkwhale/funkwhale!876

See #890: admin UI for reports settings

See merge request funkwhale/funkwhale!873

Improvement of Apache config consistency and ease of configuration

See merge request funkwhale/funkwhale!874