Add parameter to form generation to ignore invalid data

[VojtechLunak]

AS-IS - form-generation.sms.ttl

SPipes form generation script can take formTemplateVersion URI parameter to try to generate JSONLD form view for previous form template versions.

"Breaking changes" in templates between versions can occur in this scenario, when the old records' form view is generated with new form template version

TO-BE - as a solution to iterative cycle in Record Manager - #262

SPipes form view generation will be generically error-prone, but some data may be lost due to the changes in form template versions.

To see which record "lost" data during form view generation, SPipes can take in another argument, so external services will know if it is valid and complete form view, or if some data is not present.

[VojtechLunak]

@blcham

[blcham]

@VojtechLunak done, tested, reopen if it does not work for u.