Big August 2014 merge o’doom (merge to github)

A whole bunch of changes—I’ll write a blogpost soon, but short version:

* updated to Rails 4.1 / Ruby 2
* removing all support for IE8 and below (bye-bye modernizr)
* adding comments
* adding media galleries
* updating FontAwesome (and optimising the version used on front-end)
* little tweaks, changes and improvements all over the place