Fixed french datepicker js_format year: yyyy to yy

Fixes #311
Add pry for debugging goodness
Duplicate translations along with everything else when duplicating a product

Fixes #309
add :id to permitted params for nested attributes
fixes https://github.com/spree/spree_i18n/issues/312
Add spec for updating taxon translation duplication issue

see #312
Fallback to `config_locale` only when it's not blank

fixes the build
Merge pull request #1 from spree/2-1-stable

2 1 stable