There are an aweful lot of changes here! Hooray!

In no particular order, I've done a lot of stuff, related to
the following:

* Made the website use FontAwesome symbols, instead of pictures
  in the following locations: superfish menu, read more links
  in the featured content, featured students jcarousel slideshow,
  contact-us information in the footer
* Also changed which FontAwesome symbols I was using in the
  header buttons.
* Did lots of work on the chapel sermons content type, and view.
  Still lots of work to go, though.
* Added the "Optimus Princeps" font (ttf) to mimic the logo font
  in the page titles and the slogan. Before we go through with
  that completely, we'll probably want to purchase a "Trajan" or
  "Decennie" font, or something similar. The ttf is working OK,
  but getting a websafe font will work much better, and more
  consistently.
* Generally, made some design tweaks to make things work better
  or more responsively. Overall, I think this has a couple real
  gems for the design side of things.

Signed-off-by: Elliot Voris <elliotfriend@gmail.com>