added transitability methods to the contourserver, plus some convenience functions for to make images
added transitability methods to the contourserver, plus some convenience functions for to make images

brendannee/Bikesy-Backend,brendannee/Bikesy-Backend,brendannee/Bikesy-Backend,jeriksson/graphserver,bmander/graphserver,graphserver/graphserver,brendannee/Bikesy-Backend,brendannee/Bikesy-Backend,jeriksson/graphserver,jeriksson/graphserver,bmander/graphserver,jeriksson/graphserver,graphserver/graphserver,jeriksson/graphserver