Converts project from Coffeescript to vanilla Javascript

I was trying to sort out a couple of other issues but coffeescript was hindering me. Done this PR to try and move things along.

Created a script to convert files in app and src directories. 
Converted files. Changed gruntfile to remove coffeescript stuff and fix build. 
Removed all references of the coffeescript build directory from code. 
Tweaked a computed property which was converted wrong.

Everything seems to be working in the examples.
Yep, I was thinking `Date().add({days:idx})` just so that everything lines up. But I also like how it's done in fluid.js where the date is computed outside of the return body. Either way is better than it is now; I slighly prefer the latter.