Refs #3809 - Turning on some rubocop cops

Fixes #14981 - use root_object for host RABL

Fixes #14977 - Report show toolbar has buttons instead
of links

Fixes #12945 - use helper for table css classes

Fixes #14869 - Adds import button to environments welcome page

Fixes #13741 - Prevent hidden parameters from erasing newline

Switching the input from textarea to password leads to all newline
characters being stripped from the value. This PR attempts to prevent
this by changing the font of the textarea to a font that displays a...

fixes #14661 - support IPv6 subnets

Fixes #14795 - User w/o edit_params permission can save host

Some puppet class parameter fields were not disabled for users without
the `edit_params` permission, leading to errors when attempting to save
a host with overriden parameters.

Fixes #14079 - display_link_if_authorized not hidden when disabled

fixes #14864 - show link to subnet in host nic info