Draggable: Fix whitespace in trigger function
 Draggable: Recalculate hash offset on start after plugins run

 Fixes #6884
Draggable: Only blur the focused element if the event occurs on a handle

Fixes #10527
Draggable: Only focus the draggable if the event occurs on a handle

Refs #10527
Draggable: Ensure overflow:visible containments are correctly measured

Fixes #7016
Draggable: Set explicit width/height instead of right/bottom css.

Fixes #7772
Draggable: Ensure helper is positioned even if its the element itself

Fixes #9446