[#5] Added a basic api for random headlines
less annoying show page tweet button + facebook share (hopefully not annoying)
open graph and style fixes
source update
generator select all / select none
remove new feature banner
search defaults to all time
fragments color on hover
better unicorn defaults for dev
refactor urls and normalize sorting
tweak show page
update headline sources gem to hopefully fix missing icons
bump headline-sources
new headlines, apple-touch-icon
don't fail as much with no source
better generator source exemptions
add apple-mobile-web-app-title
Merge branch 'master' into source-pages

Conflicts:
	Gemfile.lock