tree display style

[cheinzle]

In my previous installation of 0.8.8b, the tree style used '+' & '-' tree icons, and dashed lines between tree nodes, better displaying the hierarchy IMHO, as compared to my current installation of 1.1.26. I understand there were some licencing issues with the old tree js? That said, it looks like the current tree js, jstree (https://www.jstree.com/) , has lots of knobs included and appears to be able to turn the dashed lines on and off, has a selection of icons, etc., and the file ..include/js/jstree.js seems to have all of them right there for the tweaking. I must be missing something, as my playing seems to have no effect. Anyone else been down this path?