closing branch 3.21

closing branch 3.20

[server/querier] drop ExecutionPlan.annotate_rqlst that is never used

[server.querier] improve docstrings and comments

[mypy] type AppObject.category

[mypy] type Hook.events

[mypy] type __select__ everywhere

[python3] 'unicode' function doesn't exist anymore

[mypy/fix] Incompatible types in assignment (expression has type "staticmethod", variable has type "Callable[[ETag], Any]")

[py] Make flake8 less angry with cubicweb/server/sources/

[mypy/fix] Module 'urllib' has no attribute 'quote'

autopep8

[python3] replace 'unicode' by 'str'

autopep8

[test] ensure FirefoxHelper successfully exited

[test/ux] add a warning when test from FirefoxHelper timeout

[test/fix] tempfile is non portable linux command and is useless here Closes #17260390

[test/fix] prevent FirefoxHelper from silently failing to start This was breaking some tests without any obvious error message and you should fail as early as possible to make debugging easier. Closes #17260390

[doc] document debug toolbar

[doc] document new debug channels mechanism

DeprecationWarning: Please use assertEqual instead.

[doc/fix] listing of js_api in index was broken

[doc] cubicweb.server.session.Session doesn't exist anymore

[doc] remove autodoc for functions and class that don't exist anymore

[doc/fix] BwCompatCWRegistry class doesn't exist anymore

[doc] set_/free_cnxset method doesn't exist anymore

[refactoring] rename logilab.database as db to logilab_database

[UX] make error message explicit with useful information

[refactoring] blank lines to visually group lines for lisbility

[refactoring] class variable is useless

[comment] add comment for maybe unhandled situation

[refactoring] don't hide exceptions

[refactoring] blank lines to make core more readable

[refactoring] not needed anymore in python3

[refactoring] inline useless variable

[debug_channels/doc] add docstring to functions

[doc/building/fix] encoding issue was crashing sphinx in python3

[pkg] Version 3.27.0rc2

[changelog] talk about the new debug channels mechanism

[changelog] add information about the new debug html attributes

[changelog] change bullet point organization So everything related to the debugtoolbar is close to its section.

[changelog] document the new toolbar panels with screenshots

[comment] comment didn't matched reality

[debug-toolbar/display_source_code] change link display from "<>" to "[source]" It is way more explicit and understandable and doesn't take that much place.

[tox] add doc8 target to test documentation

[doc8] D002 Trailing whitespace

[doc/conf] update year of copyright

[doc/book] add RQL use cases with search/card/python/javascript Related to https://www.cubicweb.org/ticket/3899077

[debug-toolbar/fix] only import mako when the toolbar is loaded

[pkg] require logilab-common >= 1.5.2 Followup a902521

[web/views] Fix AutoformSectionRelationTags.set_muledit_editable It is a method call, so `self` is passed implicitely as first argument, so it is useless to pass it also explicitely as second argument. In fact, it does not work without this. A monkey patch had been done in a private client's project, but the fix is revelant for everyone.

[html] Add tags ol, ul, li, i, q - It is useful. - A private client's project use this.

[debug-toolbar/registry] move to Registry.add_select_best_listener new api

[pkginfo] Retrieve Cubicweb version using pkg_resources

[pkginfo] Remove unused parameter To retrieve cube dependencies or cube requirements, no more need to pass the 'oldkey' parameter to _cube_deps function as this parameter is unused.

Fix flake8 issues cubicweb/server/sources/native.py:505: [E501] line too long (101 > 100 characters) cubicweb/pyramid/__init__.py:31: [E501] line too long (104 > 100 characters)

Add missing dbmako/mako files in python sdist

[debug] add in each html snippet from where it has been generated in the code Closes #17219704

Use python3 shebang for scripts Reported by lintian "python-script-but-no-python-dep"

[pkg] Version 3.27.0rc1