As a reader I want to see the provision of the primary work in terms of which a piece of subleg was promulgated, so that I can jump to and read it

[goose-life]

Proposal

• Add parent_work_provision text field (can be null) to Work
• In the Work form, when a primary work is selected, add a text field
• Include on bulk importer and spreadsheet template
• On coverpage, include provision if captured
• Link the provision on the coverpage if the content of the parent work has been captured