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

config/routes.rb

@@ -16,6 +16,8 @@ ActionController::Routing::Routes.draw do |map|
   #map.connect ':controller/:action/:id/:sort_key/:sort_order'
   
   map.connect 'issues/:issue_id/relations/:action/:id', :controller => 'issue_relations'
+  map.connect 'projects/:project_id/boards/:action/:id', :controller => 'boards'
+  map.connect 'boards/:board_id/topics/:action/:id', :controller => 'messages'
   
   # Allow downloading Web Service WSDL as a file with an extension
   # instead of a file named 'wsdl'