Embededded player tweaks

See merge request funkwhale/funkwhale!1136

Fix #1151: Updated the /api/v1/libraries endpoint to support listing public libraries of a pod

See merge request funkwhale/funkwhale!1135

Resolve "CLI in-place import impossible with virtualenv with python3.5"

See merge request funkwhale/funkwhale!1134

Resolve "X episodes instead of X tracks on Artist channel page"

See merge request funkwhale/funkwhale!1130

Resolve "Add "New channels" widget on landing page"

See merge request funkwhale/funkwhale!1131

Resolve "Firefox auto-fills your remembered username in the search box if you open the user settings page"

See merge request funkwhale/funkwhale!1133

Revert "Merge branch 'fix-import-python-3-5' into 'develop'"

See merge request funkwhale/funkwhale!1132

This reverts merge request !1129

Fix support for Python 3.5 in import script

Closes #1147 and #1148

See merge request funkwhale/funkwhale!1129

See #1108: support using OAuth instead of JWT in front when logging in to a different domain

See merge request funkwhale/funkwhale!1127

Support session/cookie based auth, see #1108

See merge request funkwhale/funkwhale!1126

New theming system

See merge request funkwhale/funkwhale!1125

Use scoped tokens to load <audio> urls instead of JWT

See merge request funkwhale/funkwhale!1124

Increase image quality of downscaled images from 70 to 95

See merge request funkwhale/funkwhale!1112

Resolve "Removed masonry"

See merge request funkwhale/funkwhale!1123