I18N patch for "Allowing non ascii chars in document names and URLs" (XWIKI-951)

[Vincent Massol]

Hi Gilles,

I have commented on http://jira.xwiki.org/jira/browse/XWIKI-951.  
Could you please let me know if it's ok to apply your patch as is or  
if you still need to submit and updated version of it.

Thanks
-Vincent