erp5_search_rank_catalog: do not destroy the previously calculated rank

erp5_search_rank_catalog: Show module content before tools content

erp5_search_rank_catalog: keep default value low, to prevent having huge rank score

Otherwise, method draw enter an infinite loop if users selected some elements

https://github.com/methodofaction/Method-Draw/tree/463e526dbc6ec48561822fde5dec02e085e86497

Use correct portal type.

- Display the editor in ERP5 language, not browser language
 - Use PDF viewer for Drawing preview
 - Supports password protected PDFs
 - Others small changes

See merge request !1639

and several small fixes or changes to make this easier

See merge request nexedi/erp5!1642

This was a workaround for ChromeOS, but we realized it was not really good.
Disable it for the same reasons as nexedi/slapos!1196 :

 - not everybody use ChromeOS
 - this breaks the ctrl+click shortcut to go to definition/follow link
 - it makes ERP5 monaco editor behaves differently from others monaco editor
 - ChromeOS users can use chrome://flags/#use-search-click-for-right-click

When cleaning up Wendelin from restricted python pandas code
(see https://lab.nexedi.com/levin.zimmermann/wendelin/tree/remove-redundant-pandas),
it turned out that there was one line still missing in erp5.
This missing line caused a failed test in wendelin functional tests:

  https://erp5js.nexedi.net/#/test_result_module/20220614-1B46817BD/6

Readding the line fixed the test.

create_server returns either a BaseWSGIServer or a MultiSocketServer,
but add_task only exists in BaseWSGIServer - and the implementation is
simply [1]:

    def add_task(self, task):
        self.task_dispatcher.add_task(task)

by using self.task_dispatcher.add_task directly, we are compatible with
both cases.

This is relevant when running timerserver with runUnitTest, where we
create multiple sockets, one for http and one for web-dav.

1: https://github.com/Pylons/waitress/blob/v1.4.4/src/waitress/server.py#L290-L291

The default TestCase.__call__ collects errors in a test result that
was never retrieved, so errors were silently ignored.

By using TestCase.debug , we let errors propagate.

---

Minimal reproduction is running directly (ie. not with python -m unittest)
a script like this:

    import unittest

    class T(unittest.TestCase):
      def method(self):
        print('ah ?')
        boom
        print('oh')

    t = T("method")
    t()  # no error
    t.debug()  # NameError: name 'boom' is not defined

This helps debugging concurrency problems

This allows running tests using a timer server loop, that will invoke
process timer on all subscribers.
The need for this is to test a custom tool using timer server.

It was enough for 2 nodes, but with 4 nodes I sometimes saw errors.

This was a deprecated method that no longer exists since ZEO 4
https://github.com/zopefoundation/ZEO/commit/5423f110ddc1034ea0954495957894c60f6da78c

_setUpDummyMailHost is also used to prevent accidentally sending "real"
emails, so we also like to have it enabled for other nodes.

See merge request nexedi/erp5!1641