Fixes in a0 calculation and calculation of stretching energy in vertexmove

Samo Penic

2018-05-21 699ac44864e75549fb3d238d36f0bc1dd645ddac

 src/initial_distribution.c

@@ -112,7 +112,7 @@
        vesicle->sphHarmonics=NULL;
    }

   vesicle->tlist->a0=sqrt(3)/2*pow((vesicle->tape->dmax+1.0),2);  
   vesicle->tlist->a0=sqrt(3)/4*pow((vesicle->tape->dmax+1.0)/2.0,2);  
    return TS_SUCCESS;

}