Component analyzer upgrade

Created by: vicdoval

In the component analyzer : Numpy routines for Faces and Vertex Normals, Centers, Perimeter and Tangent Edge This are the results of some test

Icosphere 8 subdivisions
    center median
        Old     0.682  
        New     0.224  
    center bbox
        Old     0.665  
        New     0.369 
    center weighted
        Old     0.668  
        New     0.375 
        
    normals
        Old     0.621  
        New     0.316  
    normals absolute
        Old     0.697  
        New     0.353  

    perimeter
        Old     0.615  
        New     0.182  

    tangent edge
        Old 0.668
        New 0.321

10000 faces voronoi sphere (variable polygon sides)
    center median
        Old     0.037  
        New     0.018  
    center bbox
        Old     0.035  
        New     0.026  
    center weighted
        Old    0.033  
        New    0.022  

    normals
        Old     0.032  
        New     0.020  
    normals absolute
        Old     0.034  
        New     0.028  

    perimeter
        Old     0.031  
        New     0.017  

    tangent edge
        Old     0.034
        New     0.018

    vertex normals
        Old     0.036
        New     0.025

Preflight checklist

Put an x letter in each brackets when you're done this item:

• Code changes complete.
• Code documentation complete.
• Documentation for users complete (or not required, if user never sees these changes).
• Manual testing done.
• Unit-tests implemented.
• Ready for merge.