Fixed jstree behavior - on change reload:
- Pass modal variable to the tree.html.twig template from request (default null)
- If not modal redner data-change attr
- Node.js script will bind above element with event.
Improved AbstractMedia class:
- Created isImaginable method wich returns bool if media can be "filtered" by imagine.
Media list: Show glyphicon-ban-circle if media can not be parsed by imagine.
Merge branch '2.0' of git://github.com/Bitnoise/BtnMediaBundle into 2.0