Dump schema.rb for the first time on Rails 4.2
Dump schema.rb for the first time on Rails 4.2

Rails 4.2 changed a couple of things about how it dumps the schema:

- it uses force: :cascade on create_table [1] - I'm not sure why we had it as
  `true` before, but can't think of any reason why `cascade` would be bad for
  us.
- it also appears to now be explicit about the limits set on string columns by
  default. I can't find a reference for this in the release notes, but it seems
  better to be explicit about the existing structure of our database.

[1]: http://guides.rubyonrails.org/4_2_release_notes.html#active-record-notable-changes

alphagov/transition,alphagov/transition,alphagov/transition