Django-admin-508

* feat: Add support to call custom callback functions from filters outside of 508's scope to support unified filter button clicking

* fix: corrected dockerized application for testing
* fix: fixed test files
* addition: added task file for development commands
* addition: added cypress test
* chore: cleaned unused files
* chore: bump version

* fix: filter-list was concatenated incorrectly. Changed ? with & on tailing filters

* fix: style regressions on filter components
* fix: style regressions on navbar
* fix: address cross-os style issue on some components

* fix: improve checkbox aria-labels [View](https://bitbucket.org/projects/test/repos/my-project/commits/4f1125d3904819b94b3d4df5caa65185528128d2)
* style: various contrast fixes [View](https://bitbucket.org/projects/test/repos/my-project/commits/1c46e2c1836c2ffcc809c2e6ca40323315822756)
* chore: bump version [View](https://bitbucket.org/projects/test/repos/my-project/commits/9424be514a00c45b2ede020f7a02d951463ede64)

* fix: missing subtitle regression [View](https://bitbucket.org/projects/test/repos/my-project/commits/093e6f7ca8337a285bcc0cfc1069d5755145a42d)
* chore: bump package version [View](https://bitbucket.org/projects/test/repos/my-project/commits/f1c6c0c38d735352b5b6d3b042c4be854dc2acad)