Fixes #3192 

Fixes #3640 

Fixes #3827 

The summary section table is unformatted, making it hard to read the
stats. This PR fixes it.

Fixes #3819

Fixes #3831. Somehow this slipped through both me & user testing but all
works well now. Also swapped so staff comment logic gets evaluated
first, thus if staff submits an application (usually for testing) then
goes to make a comment to another application they won't be stuck with
applicant options for visibility.

Fixes #3553 

Fixes #3280 


## Test Steps

 - [ ] Check and notice the paf and sow form fields in any project.
 - [ ] Update attached PAF approval fields via wagtail admin.
- [ ] Try to edit the project's paf form, fields should be same as
before.

Partial fix for #3280 


## Test Steps
- [ ] Pick a submission that already has a determination and notices the
determination's fields.
- [ ] Update determination form for submission round via wagtail(remove
a few fields)
- [ ] Check the submission determination edit form, it should contain
all the fields(older) irrespective of the new determination form.

- Renamed the SystemSettings model class
- 404/403 templates specific to apply to is removed, use a single
  template for them.
- Add data migration for old SystemMessageSettings model class
- add/update the testing urls for error pages
Fixes #3768

Fixes #3813. Main changes:

- [x] Got rid of the registration form in favor of using the `/auth/`
view. Having two places where the user can potentially register is
confusing.
- [x] Cleaned up different aspects of the login flow that were mentioned
in #3813, like inconsistency in terminology (`Login` vs `Log in`),
removal of buttons where they don't need to be, etc.
- [x] Added a button on the password-ed login to bring the user back to
the passwordless log in/register view.
- [x] Have buttons in column rather than row on *both* mobile & desktop
view and made them the same width (`18 rem`).
- Should we center the login page for desktop? This was done as it felt
awkward to have everything on the left side while the buttons crept to
the center
- [x] Added icons to `Log in with <ORG> email` & `Log in or register via
email` for consistency
- [x] Moved login buttons to their own templates as some were being
reused
- [x] Added missing translation blocks 

Fixes #3660 

- Update the spacing around "Edit" button of My Submissions
- Update the metadata font color and size, make it bit dark for
  readability, and reduce size to deemphasize.
- Add edit icon to "Edit" button

Right now, the my submission for the applicants on their dashboard is
loaded after 1s of page load which is too much delay.

This PR reduces the delay so it's the loading via htmx is triggered as
soon as the page is finished loading. Also, the PR reduces the loading
preview/skeleton to 3 so there is must of jumpiness before/after the
submissions are loading, this is based on the fact that on an average
there we only few submission by a single applicant.

Fixes #3784

Fixes #3811. This removes the hamburger menu for unauthenticated users
in favor of a simple `Login` button. If a signup is intended and
`ENABLE_PUBLIC_SIGNUP` is enabled on the instance, the signup button can
be found on the `/auth/` view. I didn't want to overload the mobile view
by putting login & signup next to eachother.

Currently the "view live" button on the round detail admin page, links
to the round pages with the url containing fund slug followed by slug of
the round page.

The round can be accessed only via the fund url and the fund url serves
the active round, so the current link leads to 404.

This fixes the admin "view live" button so that it's displayed only if
the round is live and also links it correctly to the fund slug

Fixes #3794

Fixes #3787 

Since the sidebar is generated via javascript / react, the best way I
could find to remove it is to use css and then hide it.

Fixes #3808

When an Admin who otherwise could make determinations on submissions
does a batch determination then it should succeed. This commit allows it
to succeed or throws a permissions error otherwise.

Issue #3793 Batch determination `KeyError` for non-Staff user

Fixes #3693 

Aims to fully replace bleach with nh3 due to bleach deprecation.
Currently, [django-nh3](https://github.com/marksweb/django-nh3) is in
it's infancy, but seems like it could be an almost drop in replacement
for [django-bleach](https://github.com/marksweb/django-bleach), for I
[forked it](https://github.com/wes-otf/django-nh3) and made some small
additions that would allow it to work for our purposes and be smoothly
migrated.

Initial smoke testing in Hypha seems to work exactly as bleach did but
needs more extensive testing. Ideally I would smooth out some edges of
my fork and put in a PR to django-nh3. Let me know any
thoughts/questions!

Fixes #3797

Fixes #3771 

Fixes TODO comment by the Submit button

Fixes #3785

Add a check to see if there are any submission values.

Related #3788

Sets `SUBMISSION_PREVIEW_REQUIRED` to False by default and hides the
submission preview buttons.

We need a permanent fix for the preview bugs but until then this hides
the functionality.

- Update the row spacing, make them more comfortable for reading with
increased padding top and bottom.
- Update the ordering on the dropdown items, essentially aligns the
"lead" and "reviewers" to be near the lead column and reviewers column
in the rows. They are expected to align, but in one of earlier feedback
people found it would be helpful if the "lead" dropdown was near the
"lead" column.

Fixes #3748.

To silence the remaning Django check warning one can add this to
`local.py`:

`SILENCED_SYSTEM_CHECKS = ["urls.W003"]`

With public site removed, it make sense to move the home module to
hypha.home instead of hypha.apply.home. This PR refractors the code with no added functionality

- Fix the dropdown being hidden on the beta all page
- Use mouseover for quick access
- Update over states
- Update the urls to that any external urls can also be added via
  settings, removes dependeny of `reverse` while specifying urls
- How active page in the dropdown as well, a dark-blue border
- Update the focus outline to be a simple dashed-border, instead of
bulky outline

Removes the "src" and "apply" sub directory levels resulting in a more
flat directory structure for static assets.

No changes in functionality should be a result of this. It is only to
make it easier for developers to move around the code base.

Fixes #3741. Adds a new tag to get the label of the category from the ID

Add head end and body end include files. Empty by default to make it easy to insert custom content (#3777)

Allow implementors to add `templates_custom/includes/head_end.html`
and/or `templates_custom/includes/body_end.html` to easily insert things
like tracking code etc. in to `base.html`.

Fixes #3775