Add a method to test for the existence of a setting
Ensure Lucene ticket index is updated on repository deletion
Add a French translation
LDAP: Authenticated Searches without a manager password

Allow to use the LDAP AuthProvider with a LDAP Server
prohibiting anonymous searches but without providing
a manager password : searches are made on behalf of
the authenticated user.
Fix repository mailing list editing which prevented field reset
Merged #37 "Fix repository mailing list editing which prevented field reset"