Use the same protection in D&D match interaction against pushing twice
the same source element in the same target

calculated like the max time limit based on time limit configuration.

OO-3294	: remove some specific IE 7 and 8 hacks or specific javascript libraries, update jQuery to 3.3.1

OO-3265: use a different drag and drop library (dragula), fix double save issue and javascript errors

OO-2871: allow the hotspot interaction to be responsive on small screen, allow the author to resize the background images

OO-2732: implement a matchInteraction with drag and drop (fallback to click possible) with slightly enhanced editor and word export

OO-2649: fix behavior of associateInteraction with unlimited associations, fix reload issue where the old answer is not correctly loaded...

OO-2583: implement maximum time limit for assessmentTest and allow the test course element to override it

OO-1593: fix some rendering issues in QTI 2.1, allow admin to force reload the XML files from the disk, add css for prompt, remove some leading console.log