Added permalink variable to route for individual locations.
Backbone router can take a slug in the permalink - any string will do as long as there is a valid ID at the front.
Added migration adding permalink to location table.
Create a permalink for each new location.
Update permalink when location name is edited.
Put permalink creation into function.
Links to individual locations include the slug of its title.
Don't include location_id in permalink.
Clean up a bit.