Optimize jqm dependency

So far, jquery mobile was not loaded as part of mist.js
We would require JQM only after the ember app was ready which was a really nested function and for some reason r.js wouldn't get it as a dependency to build into mist.js
Now this is fixed and an extra http request to get jquery-mobile.js is cut off

long live late night optimization

ATTENTION:
This branch is a branch of progress_bar which should also get merged https://github.com/mistio/mist.io/pull/199