Description of problem:
In Liferea the default shortcut for goin to the next unread article is Ctrl+N
If you go to the special folder "Unread items" Crtl+N does not work anymore. It
works well on the other folders/feeds. It used to work with special folders in
order versions.


Version-Release number of selected component (if applicable):
liferea-1.4.11-2.fc8

How reproducible:
Always

Steps to Reproduce:
1.Start the application and update the feeds
2.Once we have underad articles select the special folder containing all unread
items
3. click in the list to select the first underad item, it is visualizd in the
view frame. Now press Ctrl+N 
  
Actual results:
The next under item diapears from the list of items, but it is never visualized
in the View / gecko frame. It just vanishes

Expected results:
The next item should be visible in the gecko rendering frame of the liferea window.

Additional info:
I am pretty much sure this was working in version 1 or 2 prior to this one,
becuase I was using it all the time. One more thing to mention is that changing
the menu shortcuts are not saved once the application quits and started again.