Ensure we use absolute URL to connect to websocket

See merge request funkwhale/funkwhale!270

Resolve "shuffling restarts current song"

Closes #310

See merge request funkwhale/funkwhale!268

Fixed #310: current track restart/hiccup when shuffling queue, deleting track from queue or reordering

Review app for docs

See merge request funkwhale/funkwhale!272

Fix typos in upgrade process:

See merge request funkwhale/funkwhale!271

- missing "H" in "FUNKWHALE"
- be consistent on `$FUNKWHALE_VERSION` env var use

Resolve "Make it possible to point the front-end to custom API urls"

Closes #327

See merge request funkwhale/funkwhale!269

Resolve "Add flag during import to replace already present tracks with new version"

Closes #222

See merge request funkwhale/funkwhale!264

Resolve "Delete old pending requests completed"

Closes #190

See merge request funkwhale/funkwhale!266

fixed typo in Contribute title

See merge request funkwhale/funkwhale!267

Resolve "Invite system"

Closes #248

See merge request funkwhale/funkwhale!263

Resolve "Make the import command accept unlimited argument"

Closes #242

See merge request funkwhale/funkwhale!261