Per project forums added.

Permissions for forums management can be set in "Admin -> Roles & Permissions".
Forums can be created on the project settings screen ("Forums" tab).
Once a project has a forum, a "Forums" link appears in the project menu.
For now, posting messages in forums requires to be logged in. Files can be attached to messages.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@529 e93f8b46-1217-0410-a6f0-8f06a7374b81

lang/fr.yml

@@ -385,6 +385,14 @@ label_stay_logged_in: Rester connecté
 label_disabled: désactivé
 label_show_completed_versions: Voire les versions passées
 label_me: moi
+label_board: Forum
+label_board_new: Nouveau forum
+label_board_plural: Forums
+label_topic_plural: Discussions
+label_message_plural: Messages
+label_message_last: Dernier message
+label_message_new: Nouveau message
+label_reply_plural: Réponses
 
 button_login: Connexion
 button_submit: Soumettre
@@ -413,6 +421,7 @@ button_log_time: Saisir temps
 button_rollback: Revenir à cette version
 button_watch: Surveiller
 button_unwatch: Ne plus surveiller
+button_reply: Répondre
 
 status_active: actif
 status_registered: enregistré