WIP on revising how race is configured.
Removed race fixed value table and put them in the code (reversal of a bad decision I made earlier in development).
Fixed bug with display of race on summary screens.
Added comments to explain the Races module.
Removed dependency of grades being in the database and made some fixes around race display.
Merge pull request #255 from codeforamerica/seed-dupes

"[Always] Change" or Removed dependency on database to render grade and race