Little bugfix in AggregatorTool

Hi!

A weird problem that could happen if feeds had changing content in their
title and linke (on channel level) items is fixed now. The problem was that
channellist_html used the sourceurl (the feeds link) as a selection criteria
for which feed an item was accounted for, and itemlist_html used the source
(the feeds title). This led to situations where you see a feed in your
channel overview (in the default radio-compatible view, where all items from
all channels are shown, this problem didn't exist!) with a number of
messages but when clicking on this feed, no messages show up. The fix is in
CVS now.

If you don't want to use the CVS version and have this problem, just switch
to the non-channel-view and you will see all messages, even those "hidden"
ones.

bye, Georg