Hidden date/time pickers display on tr click

Do not auto fill or do anything when date/time chosen, just display
Added start/end date/time, done and delete buttons

No functionality still, just html
Switched to edit button; done hides correctly

No functionality changes yet
Hide "edit" button when adding venues
Commenting code
Merge pull request #25 from kaitlinhuben/kh-itinerary-edit

Setup for editing itinerary