Prefer Helvetica Neue when possible
Prefer Helvetica Neue when possible

This fixes a layout problem with italic clues on Macs, since the
built-in Helvetica doesn't have an italic style and falls back to
another font with different metrics.

crosswordnexus/html5-crossword-solver,boisvert42/html5-crossword-solver,crosswordnexus/html5-crossword-solver,boisvert42/html5-crossword-solver