route search

This version introduces multiple enhancements:

added possibility to give start and end point of searched route

Details of additions/deletions below:
--------------------------------------------------------------

Modified:   index.html
            -- Added --
                new input to pathfinder box
            -- Updated --
                changed id of pathfinder input

Modified:   js/maps.js
            -- Updated --
                route search, for 2 given points, removed geocoding