Castle-cms

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- fix 2633 upgrade by adding metadata to action, and set default profile to 2633

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- add ability to create templates from existing contents. templates are
unpublishable and are managed as specially marked documents in a
'template-repository' folder.

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- add ES host/port override to reindex-catalog script
- add optional ES index creation to reindex-catalog script

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BREAKING
++++++++

The 3.x series of releases will bring CastleCMS into compatibility with
ElasticSearch 7. Practically, this means primarily updating 3 packages:

* castle.cms >= 3
* collective.elasticsearch >= 4
* elasticsearch >= 7, <= 7.6

The `elasticsearch` package is restricted between 7 and 7.6 primarily due to
the restriction from `collective.elasticsearch` -- this is expected to be
updated at some point, but not for the initial release of `castle.cms` 3.x.

For migration, it is recommended that you setup a new ES cluster, update
site configurations to point at the new cluster, then do the "Convert" and
"Rebuild" actions in the ElasticSearch control panel.

This will not migrate your audit log, if enabled. To migrate the audit log,
use the `castle/cms/_scripts/export-audit-log.py` script to dump the old
audit log into a CSV file, and then use the `castle/cms/_scripts/import-audit-log.py`
script to import the CSV file into the new cluster.

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- bugfix for custom index names for audit log

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- changed default slideshow view to be the actual slideshow
(Castle/some-slideshow now renders the view from Castle/some-slideshow/view-slideshow
instead of from Castle/some-slideshow/view) (482)
- changeNote bugfix (483)
- auditlog use of customizable ES index name (484 and 485)
- normalize folder contents column headings (486)
- all-contents view for folder contents view (487)
- update cryptography to 3.3.2 and update cffi to 1.14.5 (461)