fixes #271 - remove active scaffold plugin

fixes #279 - when editing a host, user selection is of the screen

fixes #277 - add search options to puppet classes page

fixes #278 - operatingsystem minor field is mandatory

CSS rework, aligned view on all pages
removed google JS from pages which do not require it

Minor SQL optimization to hosts page

fixes #272 - add a warning if there is a clock drift between the client and foreman

migration might fail if medium does not have an opeartingsystem - refs #236

fixes #269 - Remove activescaffold from audits page

Fixes #212 - Remove AS from facts