Add ember.js and handlebars.js
Add d3.js
Move bootstrap files to vendor.
Correct error in application.js
Remove console.log outputs in booking_form.js
Add infinite-scroll.js for infinite scrolling functionality with ember

(this is an forked and enhanced version of infinite scroll 
available here: https://github.com/bantic/ember-infinite-scroll)
Implement a demo infinite scroll
This is for later adaptation into a scrolling calendar.
Currently just scrolls some widgets in a container div with
some dummy latency built in.