[mod] remove backward compatible code for passlib and force modern version

DeprecationWarning: Please use assertEqual instead.

DeprecationWarning: Please use assertRaisesRegex instead.

DeprecationWarning: inspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()

[README] add testing instructions

Add pytest-subtests to dev requirements This pytest plugin adds support for unittest's TestCase.subTest (for Python >= 3.4). Since we we now only support python3 and since we use a fair amount of these, let's benefit of better reporting by using this plugin.

[test] use unittest.mock instead of mock library Now that we use Python 3 only, this is possible.

Drop python2 support This mostly consists in removing the dependency on "six" and updating the code to use only Python3 idioms. Notice that we previously used TemporaryDirectory from cubicweb.devtools.testlib for compatibility with Python2. We now directly import it from tempfile.

Merge with 3.26

Remove unused imports in cubicweb.pyramid.config

Added tag 3.26.9 for changeset 4d6909de765a

[pkg] Version 3.26.9

[pyramid/security] use cryptographically secure random generator Based on django source code in case SystemRandom is not available. According to python documentation: https://docs.python.org/2/library/random.html > Warning > The pseudo-random generators of this module should not be used for security > purposes. Use os.urandom() or SystemRandom if you require a cryptographically > secure pseudo-random number generator.

Reclosing branch after merge

Merging heads of old, closed branch

Reclosing branch after merge

Merging heads of old, closed branch

[doc/changes] document that legacy cube support has been dropped

[doc] replace legacy import to new style cube import in various places

[web/views] drop deprecated module cubicweb.web.views.timeline

[web/views] drop deprecated module cubicweb.web.views.massmailing

[web/views] drop deprecated module cubicweb.web.views.isioc

[web/views] drop deprecated module cubicweb.web.views.embedding

[web/views] drop deprecated module cubicweb.web.views.igeocodable

[pyramid/core] drop fallback import of legacy cubes

[cwconfig] drop importing legacy cubes This finally drop support for legacy cubes. In cwconfig, don't load modules in the "cubes" namespace. In cube_pkginfo() handle CW_MIGRATION_MAP which wasn't working with new style cube. Drop all method specific to legacy cubes importer: cubes_search_path(), extrapath(), cls_adjust_sys_path() Drop environment variables related to legacy cubes: CW_CUBES_PATH and CW_CUBES_DIR

[doc] better documentation for "cubicweb-ctl newcube" cubicweb-ctl newcube create cubicweb-<name> in current directory.

[test] make unittest_cwconfig.py does not depend on legacy cube machinery By dropping legacy cube tests in various places.

[devtools/test] drop legacy cube i18n tests test_i18ncube_legacy_layout() is droped and make others tests uses a new style cube "cubicweb_i18ntestcube", so it doesn't depends on legacy cube machinery.

[server/test] make unittest_migractions.py use new style cubes MigrationTC used old cube layout in cubicweb/server/test/data-migractions/cubes, move them to new style cubes as "cubicweb_<cubename>" in "apphome" (cubicweb/server/test/data-migractions/) which is added to PYTHONPATH by CubicWebTC.

[cwconfig] drop _cube_modname Since we drop support for legacy cubes, this is equivalent to _cube_pkgname()

[cwconfig] drop legacy cube importer We don't want to support legacy cubes anymore.