fixed some of the issues while reconstructing wesicles. Added Nbw/Nb metric...

Samo Penic

2016-07-03 89434d44fc91bf6dbaf023b3f3218c892420d908

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Original written by Dan Kroll in FORTRAN. Code was then largely adapted and commented by Miha Fosnaric-Fosni. Rewritten into C by Samo Penic-Peni, with help of Miha's extensive explanations.