Updates

This will be one of the last updates to this project, as I believe it
is in near-MVP state. I will likely host the JSON API for Quandl to
jqGrid in a separate repository.

Code Cleaning
——
- Moved JavaScript and jQuery to proper directories instead of embedded
inline in the HTML file.
- Changed CSS to fix height of ‘Use’ page

Bugfixes
——
- Restricted inputs to past dates only
- Changed range extension on the chart to look nicer

New Features
——
- Added jqGrid closing price display in the right panel
- Created JSON HTTP API to parse data from Quandl and transform it into
jqGrid readable JSON.

TODO
——
- Create custom error panels using jQuery