Utilize nanobar to give stacked graph loading progress

much testing, very alpha, wow
Update progressbar to handle both rickshaw graphs

Stacked errors fail the graph, so complete nano on error
Standard errors continue, so mark as done on error

Use util helpers were possible, require in graph view
Merge branch 'master' into progressbar

Conflicts:
	app/assets/javascripts/graphs/standard.js
Merge pull request #32 from anchor/progressbar

Utilize nanobar to give standard graph loading progress