refs #6371 - fix unclosed HTML tag

refs #6371 - extract VNC password text

Fixes #9186 - build interface if needed during facts import

fixes #9124 - fixes detection of hashed root passwords

A root password that started with "$" would not be hashed, and therefore
would end up being stored in clear text and inserted in clear text to the
/etc/shadow file, which just won't work. This adds a bit more to the match...

fixes #6371 - showing the vnc password

Fixes #9195 - register MAC validation errors properly

Fixes #9104 - allow disabling of interface updates

fixes #8565 - only get unique, unused message/source IDs to speed up expiry

fixes #5812 - url parameter in compute_resource#create is not required for EC2, removing the required flag

Fixes #6884 - Installation media without $minor generate broken $version

$version is generated with the major version and a dot, producing paths
like foo.bar/x64/7. which don't exist. For CentOS at least we want to generate
a path without the dot. The default values for these media have been changed too.