Set zip_gallery to TRUE only if archive exists
Set zip_gallery to TRUE only if archive exists

jasuarez/sigal,Ferada/sigal,jdn06/sigal,kontza/sigal,xouillet/sigal,cbosdo/sigal,Ferada/sigal,saimn/sigal,Ferada/sigal,jdn06/sigal,kontza/sigal,franek/sigal,t-animal/sigal,cbosdo/sigal,t-animal/sigal,muggenhor/sigal,elaOnMars/sigal,jasuarez/sigal,t-animal/sigal,xouillet/sigal,muggenhor/sigal,xouillet/sigal,jasuarez/sigal,kontza/sigal,elaOnMars/sigal,jdn06/sigal,saimn/sigal,saimn/sigal,cbosdo/sigal,franek/sigal