Reassigned the base unit to 24 (as in 16,24,48) for better rem numbers to work with, and support for browsers with a minimum font-size setting defined.

Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>
Merge pull request #985 from enyojs/fix-ReassignBaseRem-blakestephens

ENYO-720: Reassigned the base unit to 24 (as in 16,24,48) for better rem numbers...

Reviewed-By: Derek Anderson (derek.anderson@lge.com)
Integrated-By: Aaron Tam (aaron.tam@lge.com)