Resolve "Show 'description' of libraries in card"

See merge request funkwhale/funkwhale!688

Fix #570: Exclude in-place imported files from quota computation

See merge request funkwhale/funkwhale!687

Updated mono-container documentation with compose file and NESTED_PROXY

See merge request funkwhale/funkwhale!686

Fix #766: Added title on hover for truncated content

See merge request !685

Fix #767: broken Activity and Actor modules in django admin

See merge request !684

Fix #764: broken sample apache configuration

See merge request !683

Fix #757: Ensure cover art from uploaded files is picked up properly on existing albums

See merge request !682

Fix #765: Include disc number in Subsonic responses

See merge request !681

Cherry pick develop

See merge request !680

Fix #735: library view doesn't like long titles names

Closes #735

See merge request funkwhale/funkwhale!640

Fix #737: delivering of local activities causing unintended side effects, such as rollbacking changes

Deleted developers/index.rst, developers/subsonic.rst files

Resolve "Document the documentation process"

Closes #125

See merge request funkwhale/funkwhale!679