Don't let students use root.
Change irc host_alias to puppetlabs.vm
Merge pull request #336 from fnaard/ticket/TRAINVM-128/fix_host_alias_puppetlabs_vm

Change irc host_alias to puppetlabs.vm
Merge pull request #335 from klynton/disallow-root-user

Don't let students use root.
Make the versions semver.

Bumped the major version to be semver in the classroom and userprefs modules.
Merge pull request #337 from klynton/semver-all-the-things

Make the versions semver.