Add IcoMoon icon font.
Use the icon font on the about and contact pages as well.
Improve print style sheet: manage page breaks a bit more.
Drop support for IE7 and lower for the icon font.

The icons are an 'enhancement' and this site is quite usable without
the icons. I see no need to slow down IE7 nd lower even further.
Merge branch 'icon-font'
Update the "clean" 'deployment' after changing the names of the feed files.