webglapp: fix error setting material of cylinders and node spheres. Also renamed an argument of createLabelSphere for consistency.
webglapp: fix error setting material of cylinders and node spheres.
Also renamed an argument of createLabelSphere for consistency.

htem/CATMAID,fzadow/CATMAID,fzadow/CATMAID,fzadow/CATMAID,htem/CATMAID,fzadow/CATMAID,htem/CATMAID,htem/CATMAID