Bump rails to 3.2.13
Fix email validation error I18n symbol lookup

And include %{value} for interpolation in validation messages.
If not specifying a custom validation message or symbol this
will now use the same error message as rails' format validator.

This is the proper fix for the issue mentioned in PR #2364.
Merge branch 'fix-1-1-email-validation-i18n' into 1-1-fixes