article: avoid "faux italic" on lanĉo article
js: update prefixfree.js to latest version
js: update modernizr, got rid of font-face detect

And also, change prefix to use `mod-`. This will make future updates
easier.
js: drop yepnope

This is a cool loader, but it is 4kb minified and polyfill and CSS
support is not needed. Replace it with $script:
 https://github.com/ded/script.js
js: add copyright notice for $script