Description of problem:
For page URL: https://rhn.webqa.redhat.com/rhn/software/channels/All.do

When clicking on the architecture links in the table, we currently take the user
to the page showing which systems are subscribed to that channel:arch, including
when no systems may be subscribed. It is not clear that we are taking them
there. This is also contrary to existing precedent in other webapps and user
expectations where they will be taken to a page where they learn more about the
item clicked. Ergo, we should be taking them to the channel details page/tab,
from whence they can perform subsequent actions as expected.

For instance, we currently take users to:
https://rhn.webqa.redhat.com/network/software/channels/subscribed_systems.pxt?cid=6949
where we should be taking them to:
https://rhn.webqa.redhat.com/network/software/channels/details.pxt?cid=6949  

Version-Release number of selected component (if applicable):
pre-504 in QA

How reproducible:
consistently reproduceable.

Steps to Reproduce:
1. Click "Channels" in primary nav bar
2. On the channels page, click on the architecture link
  
Actual results:
Goes to the "subscribed systems" page/tab, even when no systems are subscribed.

Expected results:
Go to the channel details page/tab.

Additional info:
none