refactor(deployment-serving_yo): #12 - Serving static HTMLs  - got rid of crazy hack in Django URLs

from the last commit:
"circumvented inability to parse SASS with a site-level url work-around in skeletonDjango - hopefully this hideous trick won't be necessary if following will be answered: http://stackoverflow.com/q/20760123/1432478"

Got an solving answer (http://stackoverflow.com/a/20773194/1432478) and used setting variables in a separate file (dev & prod versions)