Collective.tiles.collection

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- Nothing changed yet.

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- Avoid error when getting collection by UID.
[daniele]

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- Add 'Show Description' option, default disabled to match rendering in previous versions of the tile.
[fredvd]

- Plone 6 support: Refactor Mosaic addon support to use zcml condition instead of using the quickinstaller tool.
[fredvd]

- Plone 6 support: Remove unused dependency on plone.formwidget.contenttree
[fredvd]

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- Drop includeDependencies="." in order to work with pip
[mamico]

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- Simplified and improved checks for registered renderers.
[cekk]

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- Python3 compatibility.
[cekk]
- Do not use templates registered from unavailable layers.
[cekk]