GF-45884: provide a way to determine italics

Added the class enyo-locale-non-italic for locales that use scripts
that do not commonly use italic fonts. This can be used in the enyo
CSS classes to determine whether or not to turn on italics for
some parts of the UI.
Merge pull request #26 from enyojs/GF-45884-ehoogerbeets

GF-45884: provide a way to determine italics

Reviewed-By: Ben Combee (ben.combee@lge.com)