Imio.helpers

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

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

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- Added `transmogrifier.get_correct_id` to generate a unexisting id with numbered or lettered suffix.
[sgeulette]
- Renamed `transmogrifier.correct_path` to `transmogrifier.get_correct_path`
[sgeulette]

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- Fixed `setup.load_type_from_package` when loading a Dexterity FTI because
it fails to purge old values.
Purging is disabled for `Dexterity FTI`, added new parameter `purge_actions=False`
that will remove the actions for a `Dexterity FTI` so it is reloaded in correct order.
[gbastien]
- Improved `transmogrifier.str_to_date` with min and max
[sgeulette]
- Fixed `ValueError: 'value' is not in list` in `content.sort_on_vocab_order`
when a value of given `p_values` does not exist in the given `p_vocab`.
[gbastien]

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- Fixed `cache.obj_modified` when checking annotations, take care that `_p_mtime`
is not changed on `__annotations__` when a value changes in a stored annotation
that is a `PersistentMapping`.
Also removed parameter `asstring=False`, when `asdatetime=False`, returned
value is float which is convenient to be used in a cachekey.
[gbastien]
- Add `catalog` parameter on `content.uuidsToObjects`, `content.uuidsToObject`,
`content.uuidsToCatalogBrains` and `uuidsToCatalogBrain` to allow query on
other catalogs (e.g. uid_catalog)
[mpeeters]

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- Be more defensive in `content.get_user_fullname`, in some case, a userid
is found in `mutable_properties` but there is no properties associated with it.
[gbastien]
- Improved `transmogrifier.clean_value` giving a replacement value
[sgeulette]