[PUI] Session authentication (#6970)

* Adjust backend cookie settings

* Allow CORS requests to /accounts/

* Refactor frontend code

- Remove API token functions
- Simplify cookie approach
- Add isLoggedIn method

* Adjust REST_AUTH settings

* Cleanup auth functions in auth.tsx

* Adjust CSRF_COOKIE_SAMESITE value

* Fix login request

* Prevent session auth on login view

- Existing (invalid) session token causes 403

* Refactor ApiImage

- Point to the right host
- Simplify code
- Now we use session cookies, so it *Just Works*

* Fix download for attachment table

- Now works with remote host

* Cleanup settings.py

* Refactor login / logout notifications

* Update API version

* Update src/frontend/src/components/items/AttachmentLink.tsx

Co-authored-by: Lukas <76838159+wolflu05@users.noreply.github.com>

* fix assert url

* Remove comment

* Add explicit page to logout user

* Change tests to first logout

* Prune dead code

* Adjust tests

* Cleanup

* Direct to login view

* Trying something

* Update CUI test

* Fix basic tests

* Refactoring

* Fix basic checks

* Fix for PUI command tests

* More test updates

* Add speciifc test for quick login

* More cleanup of playwright tests

* Add some missing icons

* Fix typo

* Ignore coverage report for playwright test

* Remove coveralls upload task

---------

Co-authored-by: Lukas <76838159+wolflu05@users.noreply.github.com>
Co-authored-by: Matthias Mair <code@mjmair.com>

.github/workflows/qc_checks.yaml

@@ -544,15 +544,6 @@ jobs:
       - name: Report coverage
         if: always()
         run: cd src/frontend && npx nyc report --report-dir ./coverage --temp-dir .nyc_output --reporter=lcov --exclude-after-remap false
-      - name: Upload Coverage Report to Coveralls
-        if: always()
-        uses: coverallsapp/github-action@3dfc5567390f6fa9267c0ee9c251e4c8c3f18949 # pin@v2.2.3
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          flag-name: pui
-          git-commit: ${{ github.sha }}
-          git-branch: ${{ github.ref }}
-          parallel: true
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v4.3.0
         if: always()