Changed node title cursor

[LukasLoeffler]

Hello,

in my opinion the current cursor for the title of the node is not the best option. In my opinion the grab and the grabbing cursor are more suitable. The move cursor is indeed used to move elements (see MDN cursor)
But this source also says that grab/grabbing "Indicates that something can be grabbed (dragged to be moved)."
The move cursor is fine by itself but I think the combination out of grab and grabbing is better because if you start dragging you will see the change between draggable and dragging better.

Let me know if you are the same opinion or if I am missing something.

Example:

[newcat]

Very nice! I like that there is also some indication that the node can be dragged when just hovering above the title element - currently there is no indication at all. Thanks for the PR!