fix(frontend): `queryOptions` in UserSelection being a nop (#1409)

there is one use of `UserSelection` with `@queryOptions={{hash is_reviwer=1}}`
before this change, passing `@queryOptions` wouldn't do anything

fix(frontend): reorder inactive users (#1390)

fix(backend): fix validation and add tests (#1379)

feat(backend): allow splitting up timed entries by reviewer

fix(frontend/magic-link-modal): consistent flag behaviour

before this, flags such as `notBillable` or `review` would behave as such:
- not in the url by default
- `?<flag>=true` when toggled
- `?<flag>=false` when toggled again

with this fix, flags are only ever included in the url when they're enabled

fix(frontend): migrate magic link durationpicker to ui-core

feat: toggle analysis table column (#1115)

* feat: user-settings service

* refactor(appearance-test): remove useless code

* refactor(user-settings-service): clean unused code

* refactor: move column picker to the end, and remove unused code

* refactor: clean comments in the code

fix(frontend): change magic link icon to a wand with sparkles (#1370)

fix(ember/styles): primary-dark colour ("old" theme) (#1365)

chore(frontend): move new-modal -> modal & add small test for modal