[aprssig] Screen scraper

[Gregg Wonderly]

Andrew Rich wrote:
> I have some issues with the JAVA client
> 
> 1) It seems to drop the connection to APRS IS and not re-connect

I've just submitted updates to make it reconnect on disconnect with a 2 second 
pause between tries.

I also have it coloring the backgound of the 0/0 stations red in the list so 
that you can see that case.

Thanks for the feedback!

Gregg Wonderly
W5GGW