fix touchmove event that prevents context menu from appearing when scrolling the tree
fix touchmove event that prevents context menu from appearing when scrolling the tree

vakata/jstree,codio/jstree,codio/jstree,duzun/jstree,vakata/jstree,iCasa/jstree,iCasa/jstree,Project-TF/jstree,duzun/jstree,Project-TF/jstree,iCasa/jstree