Version to 15.
Merge pull request #465 from reciprocity/feature/labeltoS15

Update version from s14 to s15
putting back icons in widget list items
Added inferred roles to the person page
Adding inferred roles for more object types
Fix so migration won't fail due to invalid `modified_by_id`

* Previously, an invalid `modified_by_id` entry would cause an
  exception, leaving the migration in an unknown state.
Refresh Audit after joined objects are created

* Otherwise, the Audit instance is not consistent with the Request
  instances.
Fix auditor contact field, naming.
Fix placeholders for test, notes fields.
Merge pull request #467 from reciprocity/feature/fix-migration

Fix so migration won't fail due to invalid `modified_by_id`
Changing extra_javascript block on admin page to include current_user (by inheriting from dashboard)
Refactored pbc models to refresh parent objects on child object create

Added debounce to Cacheable.prototype.refresh, so multiple hits to
refresh() for an object (e.g. many joins being created) only call
out to the server every 1sec.
section modal code fix
program modal advanced fields update
About button on welcome page fix
info in main lhs popover one line fix
Hid tree footers from the profile view, tweaked copy
Merge pull request #472 from reciprocity/feature/auto-generate-object-fix

section modal code fix
Merge pull request #473 from reciprocity/feature/program-modal-update

program modal advanced fields update
Merge pull request #474 from reciprocity/feature/welcome-page-fix

About button on welcome page fix