Added a funciton that calculates everything needed for spherical harmonics

Samo Penic

2018-07-02 f977e8fe32b6a1a2ae85662ab35fd7c9f647cc3e

 src/initial_distribution.c

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

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

}