Restore breadcrumb head

I find it practical to have this root link in the breadcrumb to reset
filters. It looks better, too.
Some box-shadowing + orange text on current page menu link
Serve icons as 32x32 png
Subtler shadow on Lutris screenshot
Make news images as PNG and no upscaling
Merge branch 'patch' of git://github.com/Xodetaetl/website into Xodetaetl-patch