Change the @alt-font from volkhorn to volkhov

In _head.html we're loading volkhov.js from edgefonts, but in
variables.less it was referencing volkorn. I don't see volkorn
loaded anywhere, so I'm assuming it's a typo.
Merge pull request #18 from jhubert/patch-1

Change the @alt-font from volkhorn to volkhov
Compile main.less to reflect corrected @alt-font variable
Merge branch 'hotfix/alt-font'
Cleanup schema items
Merge branch 'hotfix/schema'
Cleanup schema items I missed the first time.
Merge branch 'hotfix/schema'
Modify header animations and placement
Merge branch 'hotfix/minor-fixes'
upgrade to so simple theme v1.2.8