Description of problem:
Clicking on the config file like from the system event history leads to a "not found" page.

Version-Release number of selected component (if applicable):
spacewalk-java-2.2.121-1.fc19

How reproducible:


Steps to Reproduce:
1. Create a config file that has several revisions
2. Deploy it to a system, schedule and execute a config file comparison through the webui
3. Go to the server's event history and look at the event details. click on the config file name.

Actual results:
"We're sorry, but the configuration revision could not be found.", with the following message in catalina.out:
WARN  com.redhat.rhn.common.errors.LookupExceptionHandler - Could not find config revision with id=322

Expected results:
Should see the config file detils.

Additional info:
The problem is that we're inserting the config *file* id in the url when the argument is expection config *revision* id.