Add support for Chrome Mobile web apps

As of Chrome Mobile 31, Google have added [Install to Homescreen](https://developers.google.com/chrome/mobile/docs/installtohomescreen). This adds a new meta tag `<meta name=”mobile-web-app-capable” content=”yes”>
`, and `(apple-touch-*) ` is being depreciated in favour of `<link rel=”shortcut icon” sizes=”1024x1024” href=”nice-highres.png”>`