Replace PNG SUSE logo with SVG version
Add placeholder "dashboard" section
Add shellinabox iframe
Add embedded instructions (and corresponding QR code)
Add link and QR code for github.io URL
Increase QR code background opacity

Makes the QR codes easier to scan against the otherwise dark
background.
Add section on Crowbar
Add section on Pacemaker barclamp
Add section on deploying nodes
Improve formatting in Pacemaker section
Add section on using Horizon and testing HA