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

app/views/boards/edit.rhtml

@@ -0,0 +1,6 @@
+<h2><%= l(:label_board) %></h2>
+
+<% labelled_tabular_form_for :board, @board, :url => {:action => 'edit', :id => @board} do |f| %>
+  <%= render :partial => 'form', :locals => {:f => f} %>
+  <%= submit_tag l(:button_save) %>
+<% end %>