upgrade i18n_data gem to 0.5.1

i18n_data gem 0.5.1 fix some translation of countries. Please use latest gem.

Fixes #422
Dutch translation fixed (complete - voltooid)

Fixes #429
Only register before_filter set_user_language if it has not been registered yet, guaranteeing the filter retains its original position in the callback chain. Also, make sure the before_filter globalize_fallbacks is run before any other i18n filters.
Fix missing interpolation "number" on translation to "order_number"
Add `number` interpolation for order_number in Thai
[ru] update