translation missing en.spree.validation.must_be_int

[dgross881]

  config.action_view.raise_on_missing_translations = true

The Spree::LineItem class will give a missing translations exception on the quantity validation message Spree.t('validation.must_be_int'). I have tried multiple ways to fix this but cant seem to come up with a solution.

[vinniefranco]

@dgross881 wouldn't the fix be as simple as adding the missing translation?