Added settings code for initially placing map.
If have multiple entries that cover an ip address, then select the lat-long for the one with the largest prefix match.
Adding code to print parse and print an individual traceroute log.
Previously, only added a link between two nodes that are next to each
other in the traceroute output.  False if will add link between nodes
when there's a missing hop between them.  For instance:

a.b.c.d
**** (time out)
e.f.g.h

 will add two nodes, a.b.c.d and e.f.g.h, but no link between them.
With this change, will add both nodes with a link between them.
Filtering out ip addresses without geo data (eg, private, internal
addresses).