Revert "Revert "Update files for Jekyll 2.x.""

This reverts commit eac8e8d6f106c13d3577ec5c25f2f0bb4427053d.
Rename from-matter variable.

This is a fix for Jekyll 2.x's issue we face with `name` being overwritten, probably because it's become a default variable or something. That, or it's a bug, but this should work regardless.