Export a single sentence and it's draft statements based on state machine, "ready to review"

[stappan]

User Story - during distillation, it is often necessary to view all related populations together in order to make sense of the entire composite, as well as to seek the assistance of knowledge experts who do not have (or want) Composer access.

Acceptance Criteria:
When a sentence is in the state "Ready for review", the csv export should include these fields visible in the Composer admin interface:

Connectivity statement number (e.g., #1-n)
Knowledge statement (free text field)
URI (this is provenance citations)
Notes
Title (this is the sentence title)
Text
DOI
Tags
External ref

[iliasziogas]

By notes in the list above, I think you refer to the "Additional notes" of each statement but perhaps we also want to export the Notes under the sentence. @stappan Perhaps, we should extend the ability to export the information in csv file to other stages too, and not only "Ready to review". What do you think?