New version of create-page-url :
 -  Allow to create url in different language than the current one with param lg
 - New Metas by default for reverse language (Used by module alt-language-link-updater)

Signed-off-by: Pascal Piché <pascal@nitriques.com>
Merge branch 'dev' of https://github.com/DeuxHuitHuit/symphony-2-template into dev