Add new listings page in backbone.
Make functional form in backbone for new listings, which creates lat/long for new listing.
Add error bar and styling to new listing form.
Create edit listing view in backbone. Implement image uploading.
Add amenities to edit listing page.
Migrate to merge tables.
Retool amenities to live as distinct columns on listings table.
Add modal card and screen at top-level html
Add sign-in backbone view using modal. Change application controller to send back a 401 message, prompting backbone to render sign-in modal.
Implement modal interceptor for unauthorized actions.