[Fix]I18n Order

[Fix]Fix #600
[Fix]I18n Shipping

[Fix]Fix #606
Merge pull request #614 from rbs-maugier/master

[Fix]I18n Order
Merge pull request #615 from renaudJennyRBS/i18n

Fix #604, Fix #474 i18n Migration
Clean SEO Plugin from old i18n, Fix time interval missing locales
Fix #599 i18n Migration for Notification Plugin