Imio.helpers

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- Log every 1000 elements instead 100 in `catalog.addOrUpdateIndexes` and
`catalog.reindexIndexes`.
[gbastien]
- Fixed code to make except Exception syntax Python 3.8 compatible.
[gbastien]

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- Correctly translate a utf8 state title.
[sgeulette]
- Added `content.safe_delattr` to avoid having to check `base_hasattr` before.
[gbastien]
- Added JS helper function `toggleDetails` to be able to show/hide details
using a collapsable `<div>`.
[gbastien]
- Completed `appy_pod` usecases,
fixed images to use https://picsum.photos/ instead https://www.imio.be
[gbastien]

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- In `content.uuidsToObjects`, get object with `brain._unrestrictedGetObject`
in case parameter `unrestricted=True`.
[gbastien]

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- Added parameter `unrestricted=False` to `content.uuidsToCatalogBrains` and
`content.uuidsToObjects`, when `True`, catalog search is done unrestricted.
[gbastien]

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- Added `outputMimeType` parameter to `richtextval` method
[sgeulette]
- Added parameter `query={}` to `content.uuidsToCatalogBrains`, this let's you
complete the catalog query in case you have `UIDs` and you want to filter
it on additional index like `review_state`.
[gbastien]
- Added new parameter `catalog_id='portal_catalog'` to methods
`catalog.addOrUpdateIndexes`, `catalog.removeIndexes`,
`catalog.removeColumns` and `catalog.reindexIndexes` so it is possible to
proceed with another catalog than `portal_catalog`.
[gbastien]
- Added parameter `check_contained_uids=False` to
`content.uuidsToCatalogBrains` and `content.uuidsToObjects`,
when set to `True`, if query on `UID` index returns nothing, it will query on
`contained_uids` index if it exists in the `portal_catalog` that is a special
index used to index `UIDs` of contained elements that are not indexed.
[gbastien]
- Added `IContainerOfUnindexedElementsMarker` marker interface to mark objects
containing unindexed objects.
[gbastien]

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- Do not break in `xhtml.imagesToPath` if `<img>` use a
wrong `resolveuid/unknown_uid`.
[gbastien]
- Fixed tests to not use images from site `https://www.imio.be/` but
from site `https://i.picsum.photos/`.
[gbastien]