Imio.helpers

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- Added `get_zope_root` to get zope app.
[sgeulette]
- Added `zope_app` parameter in `set_site_from_package_config`.
[sgeulette]
- Fixed `xhtml.replace_content`, make sure the entire content is replaced
including sub tags.
[gbastien]

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- Added `NoEscapeLinkColumn` as base for link column rendering html.
Escape must be done in inherited column.
[sgeulette]
- `content.uuidToObject` will now return `None` instead an empty list if uuid not found.
[gbastien]
- Remove zope.app.publication dependency in `security.set_site_from_package_config` as it is now
removed since Plone >= 5.2.6
[aduchene]

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- Added `setup_ram_cache` method.
[sgeulette]
- Added `set_site_from_package_config` method
[sgeulette]

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

- Improved `get_relations` to get optionally referenced objects.
[sgeulette]

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

- Added `content.get_vocab_value` based on `content.get_vocab` but returns
the values (`attr_name='token'` by default, may also be `value` or `title`).
[gbastien]
- Added `EnhancedTerm` based on `SimpleTerm` providing `attrs` dict on term
[sgeulette]
- Added `cache.cleanForeverCache` that will clear cache of functions using the
`forever.memoize` decorator.
[gbastien]

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

- Refactored `get_object`
[sgeulette]