The code for issue #16 has been implemented

It compiles but it has not been tested in any way.
Fixed two erros in segmentPositionings/EquiSegmentDist:

* forgot to set distSum to zero at the end of each iteration
* made a equiSegmentDist-segmentPositioning shadowing
    equiAzimuthDist-segmentPositioning and equiAzimuthDist-segmentation.
    This is to ensure that the number of rafters are aligned between the
    dependant (equiSegmentDist) and the dependency (the aforementioned
    two equiAzimuthDist-thingies)

 It forget to set distSum to 0 at the end of the loop.
renamed some files
Fix distSum bug *again*