How to reproduce:
Create a user and give him a role that has permissions only to:
system templates Read
Log in as that user and go to content management => Permission denied.
Currently navigation.rb only allows a single URL for each main tab, meaning that it won't automatically send the user to the first subtab he has access to.
*** Bug 740967 has been marked as a duplicate of this bug. ***
Should be fixed as of http://git.fedorahosted.org/git/?p=katello.git;a=commit;h=060916485e652161d5da59e00c24bb3a2d33ed8c
mass ON_QA move