Change hooks control (deny_all_hooks_but / allow_all_hooks_but) to be more predictable Prior to this, if one execute code like: with cnx.hooks.deny_all_hooks_but('metadata'): with cnx.hooks.deny_all_hooks_but(): # mycode 'metadata' hooks will be activated anyway in the inner block, which is rather unexpected (of course in real life you only see the latest hooks control statement, the former being higher in the call stack). This is due to the underlying usage of old `enable_hook_categories` / `disable_hook_categories` methods, which were introduced much before the now official context manager based API (with `cnx.[deny|all]_all_hooks_but(...)`). To move on, this patch drop the two legacy methods, rename and privatize related internal state on the connection (`hooks_mode` becomes `_hooks_mode`, `disabled_hook_cats` and `enabled_hook_cats` become `_hooks_categories`) and reimplement the `_hooks_control` context manager to simply update them. See the added unit test for details.

[cwconfig] make appobjects_cubes_modnames() public The method is used in cubicweb.cwvreg without underscore and outside of the config class, so let's make this method public. Fix autoreload with twisted.

Fix str(Unauthorized) which is really problematic on python 3 where __unicode__ is never called anymore. This was caused because in PY3, CubicWebException.__str__ was referencing __unicode__ implementation of CubicWebException, not of its subclass that implements it. Fix a flake8 style warning about lambda assignment as a bonus.

[test] avoid using a deprecated feature of yams handle_file() now require a module name (yams@d9120d7)

[test] add some tests to web.views.baseviews

[tox] Drop "touch {envdir}/share/cubicweb/cubes/__init__.py" command on py34 env This was useful when we installed cubicweb in "develop" mode but we do not do this anymore.

Drop support for https-url in all-in-one.conf This feature allowing an instance to have both anonymous and authenticated (https) url is not used anymore, let's drop it.

[test] use TemporaryDirectory context manager For consistency with others tests, use TemporaryDirectory from cubicweb.devtools.testlib.

[tox] Drop "exclude" option from flake8 config and adjust flake8-ok-files.txt accordingly Some files listed in flake8-ok-files.txt were excluded of flake8 run because of the "exclude" option in tox.ini. Some of them were non-existent files (moved), some others were actually non-flake8-compliant. In the latter case, we adjust trivial errors (blank lines, module import not on top of file) but remove others (like cubicweb/test/unittest_utils.py) from flake8-ok-files.txt.

[autoform] Go through guess_field even when field class is specified using uicfg guess_field does not only find the proper field class for some attribute/relation, but also do some basic configuration depending on e.g. constraints. Before this patch, if one was specifying explicitly the field class using uicfg.autoform_field, this automatic configuration wasn't happening. Change form.field_by_name and ff.guess_field so explicit class are also automatically configured now. Closes #14474840