Collective.iconifiedcategory

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- Nothing changed yet.

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- Fixed utils.get_categorized_elements when `result_type='objects'`
and `sort_on='getObjPositionInParent'`.
[gbastien]
- Corrected typo in french translation of `Preview`.
[gbastien]
- Removed optimization in `utils.validateFileIsPDF` to avoid multiple validation
because it breaks validation of several elements added in the same `REQUEST`
(when using rest api for example).
[gbastien]
- Added `collective.iconifiedcategory.every_category_uids` vocabulary that
lists every found categories with uid as vocabulary term token.
[gbastien]

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- Corrected bug due to typo.
[sgeulette]

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- Replaced container cloned event by moved event to handle rename,
copy/paste and cut/paste of a container in the path.
[sgeulette]
- Removed useless IconifiedModifiedEvent
[sgeulette]
- Used `IIconifiedCategorizationMarker` in adequate subscribers definition
[sgeulette]
- Removed some hasattr tests (MOD-831) and corrected events object
[sgeulette]
- Handled cut/paste and rename of a categorized element
[sgeulette]

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- Added `IExcludeFromNavigation` behavior on `ContentCategoryConfiguration` type.
[sgeulette]
- Corrected bad step dependency
[sgeulette]

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- Added `get_` and `set_` methods for settings registry records in `config.py`.
[gbastien]