[New Feature][Blue Progress Bar] updates screenshots
[New Feature][Blue Progress Bar] Updates progress bar scss

Simplifies the variable width progress bar css, and the re-progress label.  Basically, stopped trying to jump through css hoops to get the label to live inside the progress bar.
[New Feature][Blue Progress Bar] removes <h4> tags and uses rs-progress-labels for titling in the screenshot html
[New Feature][Blue Progress Bar] Updates the Demo detail view to use the blue progress bar and match the UX Pattern
[New Feature][Blue Progress Bar] Updates the progress bar docs and detail view pattern docs to have the rs-progress-label outside the progress bar
[New Feature][Blue Progress Bar] Updates the demo head to use local, generated canon.css
Merge branch 'add-blue-progress-bar' of https://github.com/rackerlabs/canon into add-blue-progress-bar

Conflicts:
	examples/screenshots/progress-bar.html
	lib/stylesheets/patterns/_progress.scss