Imio.helpers

---------------------

- Added batching module.
[sgeulette]
- Fixed the way JS function `submitFormHelperOnsuccessDefault` manages
returned result when it is a file, now we have a correct `filename`.
[gbastien]
- Added transmogrifier Expression and Condition classes to log expression
compilation or interpretation errors.
[sgeulette]
- Removed `content.safe_encode` as already defined in `imio.pyutils`.
Import it from `imio.pyutils` in `imio.helpers.content` for temporary backward
compatibility, to be removed.
[gbastien]
- Overrided `folder_contents` to make it work with `DashboardCollection`.
[gbastien]
- Monkeypatched `plone.app.querystring.registryreader.getVocabularyValues`
to keep vocabulary order onloy for Plone4, behavior is correct in Plone5+.
Manage every `HAS_PLONE_X` values.
[gbastien]

---------------------

- Made compliant with Plone 4, Plone 5, Plone 6
[boulch, laulaz, sgeulette]
- Require `pathlib2` in `setup.py`, backport `pathlib` for `py2.7`.
[gbastien]
- Added `security.setup_app` to be used in run scripts.
[sgeulette]
- Added `setup.load_xml_tool_only_from_package` to load only main tool xml file.
[sgeulette]
- Added `setup.test_remove_gs_step` to remove a generic setup step.
[sgeulette]
- Added `imio.helpers.YesNoForFacetedVocabulary`
[sgeulette]
- Fixed `content.base_getattr` that was not returning the `default` if attribute
not existing.
[gbastien]

-----------------

- Added parameter `with_user_id` to `content.get_user_fullname`, this will
include `userid` in brackets in result like `Firstname Lastname (userid)`.
[gbastien]
- Added parameter `userid` to `security.get_user_from_criteria`
[sgeulette]

-----------------

- Improved `security.get_user_from_criteria` to add email and description in ldap results.
[sgeulette]
- Included Products.CMFCore permissions.zcml
[sgeulette]

-----------------

- Added `workflow.get_final_states` that will return a given WF final states.
[gbastien]

-----------------

- Added `xhtml.unescape_html` that will decode HTML entities of a HTML text.
[gbastien]