Fixes: #3112

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Co-authored-by: Saurabh Kumar <theskumar@users.noreply.github.com>

Fixes #ISSUEID

Introduce tailwindcss[1] utilities and django-web-component[2] for
frontend design isolation and reusability.

Notes:
- Saas rules take preference over the tailwind (we might want to change
it)
- In the future, the saas should be depreciated, and reusable classes
should be updated to use tailwindcss

[1] https://tailwindcss.com/
[2] https://github.com/Xzya/django-web-components



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Co-authored-by: Fredrik Jonsson <frjo@xdeb.org>

- Add htmx integration
- Add hx-boost for header nav; it degrades gracefully! 

Configure https://github.com/rstacruz/nprogress to show progress on ajax
activities.

Note: django-htmx is not used right now but will be used to add more
htmx-based functionalities.

Also, update the look of the dropdown.

Partial Fix #3127

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Co-authored-by: Fredrik Jonsson <frjo@xdeb.org>

…dev so files from dev packages are collected as well. Mainly
django-debug-toolbar.

Fixes #3074

The React app or "three column view" was built for an organisation that no longer use Hypha. No current implementors use it. Removing it simplifies Hypha quite a bit.

Co-authored-by: Saurabh Kumar <theskumar@users.noreply.github.com>