ENYO-525 Use native character

Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com
Merge pull request #1781 from enyojs/ENYO-525-davidum

ENYO-525 Use native character for Date & Time picker

Reviewed-By: Blake Stephens (blake.stephens@lge.com)
Integrated-By: Aaron Tam (aaron.tam@lge.com)