Adds a trigger that reports the new location if the current location
changes more than a given distance, or if the user did not move for longer
than a given period of time.
WhereAmI map panel display, with the following features: - ability to
save/load locations - ability log/replay movements from GPS - ability to
simulate movements
Normalize GPS Information: convert from degrees/minutes to degrees only
representation, convert from the GPS ellipsoid, and fill in the
GaussKrueger coordinates