Don't create mappings for counties that don't have results

Don't create mappings for counties that didn't produce results
in the 2009 Washington Primary election.

Addresses https://github.com/openelections/core/issues/212
Fix typo: add missing comma

Because
https://github.com/openelections/core/issues/219#issuecomment-59155554
Merge branch 'dev' into ia
Iowa 2014 primary loader

Addresses https://github.com/openelections/core/issues/203