Description of problem:

If the advisory is too big to fit on the screen, you can't see the whole thing.
 The bottom goes off the screen.  For example, there is a huge KDE release and I
can't read all of the advisory notes.

Version-Release number of selected component (if applicable):

up2date-2.8.39-1.7.3

How reproducible:

Every time the advisory is too big.

Steps to Reproduce:

Steps are for the KDE release:
1. up2date
2. Next
3. Next
4. Select 'arts'
5. View Advisory
    
Actual results:

Bottom of advisory is off the screen.

Expected results:

Advisory should have a scroll bar so that I can see the whole thing.