(refactor) adds readable timestamp to event listings

(refactor) adds readable timestamp to event listings

(feat) Adds association between map markers and event:
a google map marker has reference to the object that represents an event(id, addres, etc..)

(feat) Test implementation of a modal-selection directive:
 I don't currently have an approach to get a click event on a map marker to take advantage of angular binding    let alone render to the view.