UI Changes and Improvements

Major noticeable changes:

* Removed dependency graph button from job list per feedback from Airbnb
* Defaulted epsilon to 30 minutes per feedback from Airbnb
* Normalized lots of font sizes and weights to simplify styles
* Rendered templates that required no interpolation as plain HTML, meaning
  the user sees something on the page faster than previously

Major implementation changes:

* Removed all requests to Google's font API in favor of a static
  stylesheet pointing to the public assets. This also remove a requirejs-plugin
  dependency, fewer JS files.
* Upgraded Rivets from 0.4.5 to 0.4.9 and used the JS version instead of
  the CoffeeScript one to save unnecessary compilation
* Reduced re-rendering that Rivets was handling
* Delegated events in job list instead of adding listeners to each list item. This
  reduces the number of listeners required to dozens or hundreds with large
  lists.