hmm, so treeview situation with Angular vastly improved.
first, not angular, but tempting because it already works well with remote data json src, and has drag and drop even between treeviews – which I was hunting for to see if already done by someone:
hmmm, would prefer angular of course, before there was only this:
https://github.com/eu81273/angular.treeview which I have used and it is ok given nothing else already plug and play out there…
but just now I found this:
and it has between trees drag and drop! try it out –> http://jimliu.github.io/angular-ui-tree/trees.html
plug and play angular drag and drop out there also getting better and better: