zope5: Since 5.8.1 missing Content-Type HTTP header is interpreted as application/x-www-form-urlencoded.

Zope.git:
  commit 5b324f6c461f5ea1cc069739b6c32a1a5ff59df9
  Date:   Thu Jan 19 07:15:18 2023 +0100
    replace `cgi.FieldStorage` by `multipart` (#1094)
    * interpret a missing `CONTENT_TYPE` as `application/x-www-form-urlencoded`

With cgi.FieldStorage, it was interpretated as text/plain so Content-Type has to
be provided now (even for WebDAV despite RFC 4918 stating that it *SHOULD* be
provided).

Some Unit Tests did not provide such header at all but this was wrong (such as
erp5_stripe:testStripe where the real request has application/json as
Content-Type and not text/plain).

See bcd82831 (comment 216152)

The main query to the hateoas web section must be cache by the browser,
to reduce the number of queries by 2.

Caching policy manager conditions are checked before calculating the query result,
and so, it is not possible anymore to wait for the script to explicitely
ask for the result to be cached.

so that we can identify recently deleted objects, that are important to resynchronise catalog and ZODB in case of a catastrophe.

version up and fix a bug with indentation being 4 spaces (instead of the expected 2 spaces) with empty python files

See merge request nexedi/erp5!1987

true is not an allowed value, causing a visible problem tabSize to be
ignored on empty documents and using 4 for python.

   Prevent the user start an inconsistent assignment, since, extra property sheets can include some
   business logic around assignment configuration.

This fixes a regression with 445e8fa8 (ERP5TypeTestCase: rework
default manager password generation, 2024-05-27), it was no longer
possible to run live tests from a "normal" zope instance, this was
failing with:

Traceback (most recent call last):
  File "./eggs/Zope-5.10-py3.9.egg/Testing/ZopeTestCase/PortalTestCase.py", line 59, in setUp
    self._setup()
  File "./parts/erp5/product/ERP5Type/tests/ERP5TypeLiveTestCase.py", line 156, in _setup
    self.login()
  File "./parts/erp5/product/ERP5Type/tests/ERP5TypeTestCase.py", line 290, in login
    return PortalTestCase.login(self, user_name)
  File "./eggs/Zope-5.10-py3.9.egg/Testing/ZopeTestCase/PortalTestCase.py", line 146, in login
    user = user.__of__(uf)
AttributeError: 'NoneType' object has no attribute '__of__'

It was only possible from a runUnitTest instance.

This comes with a small breaking change that when using file:// URLs,
they need to be well formed ( file:// + path and not file:/ + path )

Use scrubHTML() from safe_html module instead.

It was using bytes(), but this seems wrong now.

a17bb910: py2/py3: Make Products code compatible with both python2 and python3.