more flexible breadcrumb
Merge branch '2.0' of github.com:Bitnoise/BtnAdminBundle into 2.0

* '2.0' of github.com:Bitnoise/BtnAdminBundle:
  Sorting jstree: Fixed bad var context.
  Sorting js tree: - Removed start/stop sorting on btn click. - Created logid on drag stop (move_node) event. Prepare parameters for back-end and sent it through ajax. - Added spinner on start/stop ajax.
  better knp_menu rendering navbar menu
  Jstree - improved sort btn. Toogle text on click  ( and btn-dnd property ).
  Created js logic to handle Drag and Drop ( jstree plugin ): - Disable dnd at start - Trigger disabel on button click. Added simple class toggle ( color ). - Allow dnd only if opertion is move and if node has draggable attr set to true - avoid to sort root nodes.
  move AbstractType to base bundle
  add jquery-sortable
  fix output dir
  fix select2_hidden field render
  fix styles
  add select2 form type