Add some glyphicons
Implementation of acceleration() in Coordinate class to compute the acceleration in m/s^2 between two points
Implementation of computeAverageAcceleration() in Ride class to compute the average acceleration over a given ride (list of coordinates).
Displaying average acceleration for each ride
Suppresion of a logger in computeAverageAcceleration() and usage of the acc in estimateRideType() to improve the accuracy