Remove redundant `copy:styles` declaration from watch
Gruntfile.js: minor cleanup.
Add "osscdn" in meta keywords.
Open the files in a new tab.
Use an icon for the network link and change the github one.
main.css passes csslint tests.
Tweak `library .extras a`.
main.html: Switch to `div` instead of `ul` since there's one one list item used.