Fixes #8258 - CR provider errors with correct log level

(cherry picked from commit 3d85bef8c2181b7b8642341d277cd794ae625f36)

Refs #969 - Foreman-side changes for serving templates from the proxy

(cherry picked from commit 2094e4e8b049e6cae32326c33a7ba73cc4047b9f)

i18n - extracting new, updating rails, pulling from tx

fixes #7586, #7734, #7172 - user preferences for receiving mail notifications

Adds a framework for user-selectable mail notifications. The work is
still done in ActionMailer classes and launch by rake in cron, however a
wrapper called MailNotification is used to provide RBAC and make the...

refs #3260 - add label for default value tickbox to match overrides

(cherry picked from commit e38f227256c0fa971f879ce4f7e773e57b868efd)

refs #3260 - extract string, fix inconsistent capitalisation

(cherry picked from commit 9f2668946dd5d605a2775b9f124167423f3ab555)

fixes #7982 - Parameterize Operatingsystem.title to avoid non-alphanumeric characters in title (and friendly_id)

(cherry picked from commit 47ab039e61ae3f29627de0a770fa0c6b41f33c47)

Fixes #3260- Allows puppet to manage value of smart class parameter that can be overrided

(cherry picked from commit 8e53b7c915ecab576e5950b20e75552ec6a02edb)

fixes #8133 - update audit diff view to match changes in cafa947

(cherry picked from commit ebf335e0d936be20e93e7b76217e46c813bfa548)

fixes #7975 - Subnet names should be unique

(cherry picked from commit 4af1e2bacaa43c7dc3bb535cb087a6584b87719e)