Fix regression from absolute showing fixes.  Change results in `display` style attribute and `showing` property to no longer be kept in sync, to avoid state inconsistencies.

DCO-1.1-Signed-Off-By: Kevin Schaaf <kevin.schaaf@lge.com>
Merge pull request #645 from enyojs/getshowing-fix-kevinpschaaf

Fix showing sync issue

Reviewed-By: Ben Combee (ben.combee@lge.com)