Host custom fonts at and load them from BradleyManning.org.
Embed CSS from `css/main.css` to `index.html` template.
Host social media sprite icon theme file from Tumblr's CDN service.
Import new sprite icons from Tumblr's theme file hosting CDN.
Enable toggle-able option to show or hide campaign updates section.
Only render Twitter handle if Tumblr knows it.
Include Facebook username as variable, conditionally render its icon.
Remove `fieldset` CSS styling, inherit from "normalize" style sheet.
Merge branch 'master' into tumblr
Apply newest CSS changes (removal of `fieldset` styles).