public/js/g.raphael/g.line: fix stripes for datasets added after initialisation
public/js/g.raphael/g.line: fix stripes for datasets added after initialisation

RBE-Avionik/skylines,RBE-Avionik/skylines,Harry-R/skylines,kerel-fs/skylines,skylines-project/skylines,TobiasLohner/SkyLines,Harry-R/skylines,dkm/skylines,Turbo87/skylines,snip/skylines,Turbo87/skylines,skylines-project/skylines,Turbo87/skylines,kerel-fs/skylines,Harry-R/skylines,skylines-project/skylines,TobiasLohner/SkyLines,shadowoneau/skylines,Harry-R/skylines,skylines-project/skylines,shadowoneau/skylines,snip/skylines,kerel-fs/skylines,snip/skylines,Turbo87/skylines,shadowoneau/skylines,TobiasLohner/SkyLines,RBE-Avionik/skylines,shadowoneau/skylines,dkm/skylines,RBE-Avionik/skylines,dkm/skylines,dkm/skylines