Description of problem:
When entering a new bug, Bugzilla shows a list of Possible Duplicates as I type the Summary.  For each of the potential duplicates, there's an "Add Me to the CC List" link.

If I click that link, it loads the referenced bug in the current tab, in which I have unsaved changes (my partially complete bug report).  It would be more user friendly to either open a new tab to add the CC or to just add the CC in the background.

Version-Release number of selected component (if applicable):
4.4 (current production) and 5.0.3. (beta.bugzilla.redhat.com)

How reproducible:
Always

Steps to Reproduce:
1. Go to New->Community->Bugzilla.
2. In the Summary field enter "Bugzilla"
3. Click the "Add Me to CC List" link for the first possible duplicate.

Actual results:
The current tab reloads with the clicked URL.

Expected results:
Either:
- The clicked URL opens in a new tab, or
- The addition to CC list happens in the background, with some kind of user feedback when it completes (e.g. the link changes to "Remove Me from CC List").

Additional info:
none