image-path-in-less: use @onyx-image-path for TabBarItem image
image-path-in-less: use @onyx-image-path for all images
image-path-in-less: use @onyx-image-path for all url() calls
image-path-in-less: recompiled css. url() call parameter is now quoted by lessc
image-path-in-less: clarified comment
Merge pull request #165 from enyojs/image-path-in-less

New Less variable for Image path to ease integration of Onyx Less files

Reviewed-By: Ben Combee (ben.combee@lge.com)