Improve response of tab dragging

[YodaEmbedding]

Tab dragging seems clunky and awkward.

I think a simple solution to this would be to disable "previewing" the movement of the tab. In other words, keep the tree the same until the user releases the tab. This increases speed (less redraws) and also prevents the tabs from moving around while the user tries to position the dragged tab.

[sumyungguy]

won't be fixed, see #499
you can install Tab Utilities addon and set extensions.tabutils.disableTabMoveAnimation true

[piroor]

I close this because this is too old and not match to the latest maintained version of TST.