User can update stay_time using ajax

https://trello.com/c/ssmXq8oJ/57-as-a-user-i-can-click-to-edit-and-update-stay-time-using-ajax
After you've updated the class name of the row, can you add the class as a selector to the parent call? e.g. `parent('.trip')`? Much more clear, and not tied to the specific order of your markup parent / children relationship