Update FontAwesome 3.2.1 to 4.2.0 [Closes #1474]

Update FontAwesome version 3.2.1 (http://fortawesome.github.io/Font-Awesome/3.2.1/icons/) to FontAwesome version 4.2.0 (http://fortawesome.github.io/Font-Awesome/icons/) to allow more icons, newer syntax, and more frequent updates