fixes #7754 - Adds cloning of activation key, BZ 531307
Merge pull request #4740 from cfouant/copy

fixes #7754 - Adds cloning of activation key, BZ 531307
Fixes #7688: add a content hosts tab to the errata details.

Adds a content host tab to the errata details page that allows
the listing and syncing of applicable content hosts.

http://projects.theforeman.org/issues/7688