Story 48730383: Fixing up can.Model.Cacheable.model() so it doesn't create multiple copies of the same model (can break live binding)
Story 48141205: UI changes to ensure that references added through PBC have URL (pop up creation modal if new and not a URL)
Story 48708159: Now allowing blank in pop sample number fields -- also unblocks creation of new pop samples in new responses.  Added migration to fix responses with no pop samples
Story 48141205,48708159 DB migrations for adding pop samples to responses and deleting references that do not have link URLs
Story 48838301: Now counting all nested sections/clauses in directives, instead of just first-level ones
Story 44666721: Fixed default page type divination for resize and sortable widgets controllers
Merge remote-tracking branch 'github/canary' into develop