1. make spot dups look back 5 mins.

2. strip the top off each character in any text field of a Spot for duping.
3. Try to make the routing tables more accurate for users that login to
more than one node.
4. Make PC50s come out in one heap on all channels every 14 mins, instead of
on the 14th minute in the connection time for each channel. This should
reduce (slightly) the dups that are dumped.