1) jsplumb.js / jsplumb.js.min
- fixed drag revert for group dragging (all nodes and their connections must revert);
- added support of "distance" parameter (behavior is the same as for jQuery Draggable Widget);

2) panzoom-9.2.5.js / panzoom-9.2.5.min.js
- added support of double click behavior disabling (when 'false' is returned from onDoubleClick callback);
