Use cross-browser ISO date format

- Using new Date(’MM-DD-YYYY’) works only on Chrome (36)
- The above format returns an “Invalid Date” on Firefox (31) and
moment.js parser also returns “a few seconds ago”
- Using new Date('YYYY-MM-DDTHH:mm:ssZ’) follows the date format spec https://bitly.com/1fvwX1i+ and works on both Chrome and Firefox
- Browser compatibility https://bitly.com/1kiffC3+