Autosize ListGridFields to prevent horizontal scrolling

[ESutherland]

Current behavior:
When a user adjusts the size of a column via the header, it will push all columns to the right off screen and a horizontal scrollbar will appear.

Seeking behavior:
When a user adjusts the size of a column via the header, it will automatically shrink other columns as much as possible to prevent horizontal scrollbar from appearing.

Thank you

SmartClient version (available on lower left of Developer Console)
SmartClient Version: v11.0p_2017-02-16/Pro Development Only (built 2017-02-16)

[Isomorphic]

We don't consider this a desirable UE, as it easily ends up fighting the user by undoing resizes that the user has just done. But if you wanted to implement it, you would add a fieldStateChanged() handler and call resizeField(), careful not to end up in loops.