Refactor: cleanup init, fix selectors and add events
Refactor: cleanup init, fix selectors and add events

- Remove unnecessary init method
- Remove unused settings parameter
- Select movers inside element. Just in case there are multiple DraggableTables on one page, this will prevent selecting movers from both.
- Add $body and $document vars
- Add update and complete events
pix-digital/pixSortableBehaviorBundle,pix-digital/pixSortableBehaviorBundle,pix-digital/pixSortableBehaviorBundle