Description of problem:
I created a new user and didn't assign any permission/role to this user. However when I login with this user, got:

-------
500 INTERNAL SERVER ERROR
Sorry about that! It seems something went wrong. If you continue having trouble with this, please contact an Administrator.

You might want to log out and log back in again to clear your cookies.

Error:
undefined method `owner_info' for nil:NilClass
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Version-Release number of selected component (if applicable):
[root@dhcp201-177 ~]# rpm -qa | grep katello
katello-cli-0.1.10-1.git.585.a6c83c3.fc15.noarch
katello-0.1.89-1.git.0.0619c06.fc15.noarch
katello-repos-0.1.3-1.git.0.db2bd1d.fc15.noarch
katello-all-0.1.89-1.git.0.0619c06.fc15.noarch
katello-configure-0.1.4-1.git.121.1fd6bdc.fc15.noarch
[root@dhcp201-177 ~]# 

How reproducible:
always with Firefox and google chrome browser

Steps to Reproduce:
1. Login with admin user
2. create a new user without assigning roles/permission
3. Login again with newly created user
  
Actual results:

Error:
undefined method `owner_info' for nil:NilClass

Expected results:
UI shouldn't raise any error while login with user which has no permissions.

Additional info: