Add a better endpoint for Google Viz data.

* Set a RESTFull endpoint base at /viz/v1/.*
* Add logic to handle /viz/v1/dailyLatency/page/(\w+)
Improve Dashboard page.

* Remove old monitor.json viz handler.
* Add javascript block into the base.html jinja2 template.
* separate viz logic into a individual js
* clean up dashboard layout to use twitter bootstrap css.