Fixes #2308. Redraw passed bounds bigger than its client area.

[BDisp]

Fixes #2308 - The Bounds client are is now passing correctly to the Redraw method. The NeedDisplay now have all the old and new area where can be used to clear all the changed area. Normally a container clear all the client area before redraw the sub-views, but there are cases where this is necessary.

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[tig]

LGTM!