add transitions back as this seems smoother on updates, fix problem where size wasn't being adjusted on pages as expected, add resize timeout that will refresh a vertical list instead of just let it sit

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
enyo.DataGridList now uses flyweighting when possible

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>