Console templating library, including graphs.

This provides the basic js, css and console template
templates required to build dashboards.
Included as an example are consoles for the node_exporter.

Change-Id: I4cfeea5e9691a9413f74ae98ca32a908df8e4a59
Merge pull request #428 from brian-brazil/sample-consoles

Console templating library, including graphs.