Allow browsing and filtering all relationships instead of just
followers, unify the codebase with the user-facing relationship
manager, add ability to see who the user invited
Conflicts:
- `app/javascript/packs/public.js`:
Upstream removed an unused function in code that has
been refactored a bit. Removed that function in the corresponding
places.
* Fix unused role routes being generated
* Remove unused JavaScript code
* Refactor filters code to be DRYer
* Fix `.count == 0` comparisons to `.empty?` in views
* Fix filters in views
Conflicts:
- app/controllers/accounts_controller.rb
- app/controllers/follower_accounts_controller.rb
- app/controllers/statuses_controller.rb
All conflicts caused by the additional `use_pack` used for glitch-soc's theming
system.