-removal of unused methods

probable bug fix: the ratio has to be done on the number of pixels and not the number of coordinates

 Creation of class ReferenceSurfaceProjection in order to compartmentalize all methods in connection with the projection of the Zellige generated height map and the display of results according to the user specifications.

 Creation of class ReferenceSurfaceProjection in order to compartmentalize all methods in connection with the projection of the Zellige generated height map and the display of results according to the user specifications.

Creation of class ConstructionCompletion in order to centralize the code which processes the height maps from a Surface object.

Removal of Median filter as a pretreatment methods in Pretreatment and PretreatmentParameters classes

code clean up

code clean up

code clean up

code clean up