CMB-1023: Slider Component RTL Alignment

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
CMB-1023: Remove RTL considerations for 5-way left/right.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #1511 from enyojs/CMB-1023-aarontam

CMB-1023: Slider, ProgressBar, SimplePicker Component RTL Alignment
Merge branch 'master' into CMB-590-anishlg
CMB-590: updated the moonstone-dark.css and moonstone-light.css