Remove magic numbers, give component much-needed attention.

  - Moves range slider to Contests:Launch (https://github.com/99designs/contests/pull/4360)
  - Fixes #6  and replaces all magic numbers to asimov-platform-settings equivs. Aliases can be added where needed as minor version bumps. No need to add 300 `forms/spaces/....` until each are needed.
  - Fixes #7 and declares dependancy on asimov-platform-settings which was previously a ghost dependancy.
  - Removes unmaintained, unused, unnecessary  package.json, Gruntfile.js, Gemfile
  - Removes dependance on `scut` which was just adding a 3 line clearfix.
  - README updated to be accurate (but still not useful. Sorry)

Ping @joshamos @xzyfer @dannymidnight @dennisroethig to review and help get this over the line.