refs #7608 - i18n fixes, tests, use POST for action + only display link if authed
Fixes #7819 - Windows facts returned from kernelrelease

https://tickets.puppetlabs.com/browse/FACT-341 operatingsystemreleasereturns a
non-numeric value since facter 2.0. Commit now reads windows opel version from
kernelrelease fact.
fixes #5130 - Added warning when apipie cache is missing or outdated