Return more helpful error messages when a resource conflict occurs
Merge pull request #5858 from edx/renzo/resource-conflict-error-messages

Return more helpful error messages when a resource conflict occurs
Track logistration form toggles and password reset form views
Merge pull request #5859 from edx/renzo/track-form-expansions

Track logistration form toggles and password reset form views
Fix logistration Jasmine tests

Includes several bug fixes caught during test writing, general clean-up, and adds js-url, a lightweight URL parser