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

fixes #268 - 500 Error on "All Puppet Classes"

fixes #236 - Installation media are now usable with more than one operating system.