avoid sanitizing warnings

[devtools] avoid warning about source['global-db-name'] sqlite and postgres db handlers store the db template name there.

[skeleton] remove no-break space from skeleton setup.py

[server/test] drop unused import

[doc] update 3.21 release notes

[devtools] Sort _cw_fields in fake_form Try to generate a predictable string, to help testing with PYTHONHASHSEED=random.

[entity] sort fetchattrs when generating rql Try to generate a predictable rql query, to help testing with PYTHONHASHSEED=random.

Update hgignore for temporary test databases

[js] removed unused and broken SuggestForm Widget (closes #5213487)

[test] Fix unittest_i18n to run properly with "pytest -t" (closes #5576169) When running "pytest -t", many tests modules will be imported and run within a single python process. unittest_i18n fails when run after tests such as unittest_webtest.py or unittest_httptest.py. The main reason is that unittest_i18n does various tricks to add a test cube to the search path, which badly fails when a previous test module has already loaded "stuff" (for lack of a better word). Instead, let's just call the 'i18ncube' command with subprocess. The change from logilab.common.testlib to unittest is not directly needed, but comes as a free cleanup with the above changes.