Add apple-mobile-web-app-title meta tag

Introduced in iOS6, more info: http://www.mobilexweb.com/blog/iphone-5-ios-6-html5-developers
Add API hosted on modulus.io
Add link to HN Faq page and change the text a little
Fix hnapi not handling errors and API not falling back to other servers
Upgrade to UglifyJS 2.0
Also track how many visits/browsers that don't support appcache
Bump appcache