Updated the samples to refer to LESS 1.7.0.

Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>
Merge pull request #1384 from enyojs/BHV-9937-blakestephens

BHV-9937: Updated the samples to refer to LESS 1.7.0.