Display id to user for future use

Added in edit itinerary and existing itinerary areas
Merge pull request #58 from kaitlinhuben/eh-timeline

date on timeline
Collision bug fix
Merge pull request #59 from kaitlinhuben/kh-edit-itinerary

Collision bug fix & displaying id to user
Condensed the change name/delete itinerary buttons, some other style fixings
fix merge conflicts. also got rid of some bugs