ENYO-3625: Fix issue with delayed :active:hover button styling in response to touch

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #189 from enyojs/ENYO-3625-aarontam

ENYO-3625: Fix issue with delayed :active:hover button styling in response to touch

Reviewed-By: Ben Combee (ben.combee@lge.com)
Update version string to 2.3.0-rc.4