ENYO-1406: Reverted change from onyx.Button to onyx.PickerButton for “Picker with Static Button” sample item.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #190 from enyojs/ENYO-1406-aarontam

ENYO-1406: Reverted change from onyx.Button to onyx.PickerButton for “Pi...

Reviewed-By: Ben Combee (ben.combee@lge.com)