Added code to change path to kml file

Changed GoogleEarthPath to accept a list of waypoints. Added KML
generation code to GoogleEarthManager.
Unit test for KML changes
Keith's DB files

Moving these to the project directory
Mariama's/Michael's shortest path files

Moved to project directory. Added/modified comments, removed test data,
changed usage of Coordinates to Waypoints. Coordinates.java can probably
be removed.
Added distance calculation

Took distance calculation from Coordinate.java, moved to Waypoint.
Coordinate.java is now redundant and unused.