Gelreportmodels

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* Add nullable action and markers fields to evidence entry and variant which is part of the CVA models

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Minor changes

* Include explicit parsing from segregation pattern into event justification for reverse migration of report events

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Minor changes

* Migration from participants 1.0.3 to 1.0.0 back in for cancer dispatch

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Minor changes

* changes to cva ReportEvent schema to match intake

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Minor changes

* changes to cva data intake schema

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Minor changes

* Improve performance of migrations by:
- Avoid unnecessary validations
- Improve performance of `toJsonDict()`
- Avoid calling `fromJsonDict()` recursively
* Fix some issues checking equality of cancer actions in round trip migrations
* In `MigrationHelpers` choice the right version when an entity validates against multiple version by looking at the version control