Merge pull request #523 from franckstauffer/i18n

New "Add User Command"
[UPDATE] begin sitemap model configuration work
[UPDATE] continue sitemap model configuration work
[UPDATE] DocumentSeo auto generation works
[UPDATE] fix case
fix an issue with bad base URL in javascripts
Generate document SEO for already created document when auto-generation is setted to yes
Add Seo unit test for new features
optimize query in Document SEO generator job
add UpdateDocumentLinks for publishable document (use in admin UI), and fix a test
Merge pull request #525 from renaudJennyRBS/seo

Seo
Add-user should not be a dev command