Fixes #6553/BZ111225: add "repositories" to product resource type name.

There was some confusion about Repository permissions being underneath
Products. This commit simply updates the resource type name to make
it obvious that repositories are also affected by these permissions.

http://projects.theforeman.org/issues/6553
https://bugzilla.redhat.com/show_bug.cgi?id=1112255
fixes #6461 - create Katello permissions without quotes in db seeds

Katello seeds was creating incorrect permissions in the Foreman DB by
adding a set of superflous quotes -- e.g., "'Katello::ActivationKey'".
This commit removes the extra quotes.
Merge pull request #4411 from waldenraines/6553

Fixes #6553/BZ111225: add "repositories" to product resource type name.
Merge pull request #4415 from stbenjam/6461-duplicates

fixes #6461 - create Katello permissions without quotes in db seeds