Due to wrong mime type sent back sometimes for jsTree themes, load it by default
Due to wrong mime type sent back sometimes for jsTree themes, load it by default

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