jlaser/success v2

something went horribly wrong with #141 so submitting this one for review. mobile styles are really cleaned up.

from other thread:
> The layout page_success.hbs contains copy. We need to figure out how to get that out. I made about.hbs a long time ago before we were moving copy out of .hbs files. You should be able to access a success.yml file inside the wrapper to loop through the sub nav items. This should work find for the one page that uses this wrapper for now, but in the future if we want other pages to use the layout it would not work.