Remove FormOptions
  - Leaky. Classes shouldn't be depending on this global object for
    options. Smells - Used in forms, views, and PDF presenters.
  - Noisy. Adds line noise to the files.
  - Complexity. Code climate scores went down when it went in
Fix SimpleForm i18n lookup!
  - Fix i18n lookup for collection inputs to accept strings
  - Get rid of symbol/string duality
Merge pull request #293 from ministryofjustice/fixup/refactor

Fixup/refactor