Revert "Do not allow multiple interactions on an element"

This reverts commit 5eb4589bc35ee34b6e43e4d07185ccc37c5312b5.

Conflicts:
	interact.js
Add maxInteractions and maxIPerElement settings
Change maxInteraction settigns to be per action

interact(el)
    .draggable({
        max: 3,
        maxPerElement: 2
    })
    .resizable({
        max: 2,
        maxPerElement: 1
    });
Only start actions withinInteractionLimit