with its reference and containing trailing slash.
301 redirection should be raised to the url without slash.

Also, fix test_WebSection_add_trailing_slash_in_url since now it expects
permanent redirection (301)

Also, url that is published in
test_14_AccessWebSiteForWithDifferentUserPreferences
iotherwise the response is the redirect, making the test fail

from double slashes. This to give compatibility with definition
in actions on Web Section and Web Site portal types, for which now
absolute_url returns a trailing slash, so definitions like:

string:${object_url}/WebSection_xxx

would create a url with double slashes

in case we publish with different languages

raise 301 redirect to the url excluding the slash

This is different than Web Section.
But in Web Page we need no-slash since we would render all other sources
in the container Web Section, so keeping the caches

- Make redirect to the url with slash as permanent (301)
Better for Search Engine Optimization
- Raise redirect only if request is GET
- Raise redirect only if redirect_to_added_slash property is true
- Fixup consistenct in quotes

As acquired property, that is Boolean to define if
the 301 redirect would happen when publishing the url without slash

renderJS gadget HTML uses relative URLs to link to there javascript/CSS files.
Absolute URL calculation is resolved dynamically by the browser when loading the gadget.

When accessing an ERP5 web section without a trailing / in the URL, the browser will calculate absolute URL from the parent document and not the web site itself.

Example:
In http://foo.com/web_site_module/bar , the relative URL couscous.js will be resolved http://foo.com/web_site_module/couscous.js
If couscous.js is a document from DMS (Web Page for example), such URL can not be resolved and leads to a 404 error.

One solution to solve this is to redirect (302) the browser when accessing a Web Section (Web Site is a web section) directly in ERP5.
Example:
http://foo.com/web_site_module/bar ->  http://foo.com/web_site_module/bar/
But  http://foo.com/web_site_module/bar/view should not redirect

Note:
This is not a complete work, i.e. it is not supposed to update all url
calculations of generic ERP5. It is done so that:
- Other pending work can use it
- Demonstrate how the API should be used and test it

for a base document, given the form_id, document_reference and GET parameters

Commit contains also a test in testERP5Type

Use Jio 3.26.0 in erp5_web_renderjs_ui and  erp5_core

/reviewed-on nexedi/erp5!491

/reviewed-on nexedi/erp5!490

fix attachment parallel synchronization issue

inotifyx is has no support for Python 3 and
it does not seem to be maintained anymore.

/reviewed-on nexedi/erp5!484

The erp5 site creation fails due to a dependency error. Dependency to erp5_full_text_myisam_catalog was added to the erp5_scalability_test business template.

/reviewed-on nexedi/erp5!483

fast synchro is not ready.

Allow to overwrite this inside project to init Properties like reference.

Because it is mainly used from the 'initsite' zope.conf section, the passed
value is often a string, hence the automatic cast to integer.

The default is defined in erp5_core: 1
The specific value '0' disables storage in ZODB.
Another other value sets the interval.

- Use unrestricted _edit method on reportTaskStatus - restrictedTraverse applies security anyway
- Remove some useless code
- Fix TypeError: stopUnitTest() takes exactly 3 arguments (4 given)