Ported coffee charts to js

Signed-off-by: Sheik Hassan <solergiga@yahoo.com>

Tested
@naegelyd I removed `initialize` from core. B/c it's not being called, the height/width of the chart is messed up. Placing the code inside the constructor solves this issue.
Nit, move this `_.bindAll(...)` above the `this.collection.when(...)` and add a blank line in between them.