Prevent v-table Overscroll (WIP)

[Gregg8]

As stated here, currently, scrolling a v-table also scrolls parent scrollbars (usually the one on [:body]).

The solution seems to be to use the relatively new CSS :overscroll-behavior.

Couldn't get it to work, however. Get back to this when we have more time.

Another reference page: https://developers.google.com/web/updates/2017/11/overscroll-behavior