Use reference scale from tailwind to update the styles of different
headers.

Overall the fonts for headers were little too large and they are now
little scaled down so they don't look blown up.

Sensible formatting is applied to form elements, esp. help-text is made
smaller.

Adminbar component used on even more pages.

PS: A lot of files are touched and also a lot of code cleanup can still
be done. So for now the best way to test this would be to navigate
through the pages pages and find any obvious issues.

Fixes: #3439

Fixes #3430

- [x] Simplified code
- [x] Use postgres FTS search
- [x] Improve UX for filters
- [x]  Improve submission listing
- [x] Add filter for submission date, OTF have asked about this.
- [x] Add submission ID search, see
https://github.com/HyphaApp/hypha/pull/3294
- [x]   Make sure the batch actions are working 
- [x]   Permissions check for batch actions
- [x] Ensure search index works after submissions is updated
- [x] ~Integrate Django messages framework with htmx responses~ (Not
needed)
- [x] [Fix Polynomial regular expression used on uncontrolled
data](https://github.com/HyphaApp/hypha/security/code-scanning/74

)
- [ ] make bulk update status working, currently it's hidden.

---------

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

Fixes #3387 

Fixes #3333 
Fixes #3352 
FIxes retesting issues of #3331

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



---------

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