ACalc: Fix SlidePanel initial sizing race-condition.  Smoother animation of nested SlidePanels.
ACalc: Fix SlidePanel initial sizing race-condition.  Smoother animation of nested SlidePanels.

jlhughes/foam,mdittmer/foam,jacksonic/foam,jacksonic/foam,mdittmer/foam,foam-framework/foam,jlhughes/foam,jacksonic/foam,osric-the-knight/foam,jlhughes/foam,foam-framework/foam,foam-framework/foam,foam-framework/foam,jlhughes/foam,osric-the-knight/foam,jacksonic/foam,foam-framework/foam,osric-the-knight/foam,osric-the-knight/foam,mdittmer/foam,mdittmer/foam