Custom JEXL context

[Yelinz]

The current JEXL context is limited and would be better if consumers would have a way to extend the context with their own data for their needs.

A use case would be extending the question JEXL, to know which form the case is linked to. This would allow multiple different types of forms to use the same workflow, but have questions in work item forms which only appear depending on the case form.

Solutions would be either to allow consumers to extend the JEXL context or to simply include some meta fields in the current context. The first option would entail quite a bit of overhead/ work to keep the frontend and backend jexl context the same.