replaced jquery nestable library with nestable2#1330

Merged

bheyser merged 2 commits intoILIAS-eLearning:trunkfrom bheyser:60nestable2

May 22, 2019

+5,922-924

Commits on Nov 26, 2018

replaced nestable with nestable2 since this fork does support scrolling while dragging
bheyser
committed
changed nested ordering gui to use nestable2 instead of nestable, activated scroll in nested ordering gui initialisation
bheyser
committed