Added support for new page visibility api and new launch/relaunch events
Enyo-DCO-1.1-Signed-off-by: Jason Robitaille <jason.robitaille@lge.com>
Updated event names and moves around old relaunch format code
Merge pull request #24 from webOS-DevRel/webos-visibility-relaunch-jasonrobitaille

Added support for new page visibility api and new launch/relaunch events

Reviewed-By: Ben Combee (ben.combee@lge.com)