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/de.yml

@@ -385,6 +385,14 @@ label_stay_logged_in: Stay logged in
 label_disabled: disabled
 label_show_completed_versions: Show completed versions
 label_me: me
+label_board: Forum
+label_board_new: New forum
+label_board_plural: Forums
+label_topic_plural: Topics
+label_message_plural: Messages
+label_message_last: Last message
+label_message_new: New message
+label_reply_plural: Replies
 
 button_login: Einloggen
 button_submit: OK
@@ -413,6 +421,7 @@ button_log_time: Log time
 button_rollback: Rollback to this version
 button_watch: Watch
 button_unwatch: Unwatch
+button_reply: Reply
 
 status_active: aktiv
 status_registered: angemeldet