Merge pull request #10 from eucalyptus/master

Merge changes from upstream
User Console is now called Management Console
Show disk space warning in Gb, not bits
Merge pull request #31 from ColbyDyess/master

New tutorial content
Merge pull request #32 from gregdek/master

Small output tweaks
Merge pull request #11 from eucalyptus/master

Pull changes from upstream
Adding DHCP to pre-check
Reworking error messages
Whoops, remove breakpoint
Merge pull request #33 from gregdek/master

Add DHCP check, rework error msgs