Add need_ids attribute to detailed guides
Detailed guides: show goals for associated needs
Editing need ids for detailed guides
Validate that detailed guide need ids are 6 digits
Simplify PanopticonRegisterArtefactWorkerTest with test helper
Register need_ids with panopticon for detailed guides
Fix creation and editing of detailed guides w/o need_ids
Det guides: prompt user for comma-separated need ids
Show detailed guides needs in their entirety

As a <c>,
I need to <d>,
So that <e>
Push #need_ids down to Edition
Add functional test for associating need_ids for detailed guides
Add Maslow deep-link for detailed guides needs
Merge pull request #1443 from alphagov/add-need-ids-to-detailed-guides

https://www.pivotaltracker.com/s/projects/1015742/stories/66065594

Add need ids to detailed guides