Fix for BHV-10660: popOnBack is ignored when a transition occurs

Enyo-DCO-1.1-Signed-Off-By: Roy Sutton (roy.sutton@lge.com)
Updated CSS

Enyo-DCO-1.1-Signed-Off-By: Roy Sutton (roy.sutton@lge.com)
Merge pull request #1388 from enyojs/BHV-10660

Fix for BHV-10660: popOnBack is ignored when a transition occurs

Looks good!

Reviewed-by: Aaron Tam (aaron.tam@lge.com)