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/_form.rhtml

@@ -0,0 +1,8 @@
+<%= error_messages_for 'board' %>
+
+<!--[form:board]-->
+<div class="box">
+<p><%= f.text_field :name, :required => true %></p>
+<p><%= f.text_field :description, :required => true, :size => 80 %></p>
+</div>
+<!--[eoform:board]-->