Tweak to LeanForwardArranger to handle panels that are stretched before a panel is dynamically added.
Tweak to LeanForwardArranger to handle panels that are stretched before a panel is dynamically added.

Enyo-DCO-1.1-Signed-off-by: Chris Patalano <christopher.patalano@lge.com>

mcanthony/moonstone,mcanthony/moonstone,enyojs/moonstone,mcanthony/moonstone