Fixed: "Add file" link broken by recent refactoring (#6627).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4268 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/files/index.html.erb

@@ -1,5 +1,5 @@
 <div class="contextual">
-<%= link_to_if_authorized l(:label_attachment_new), new_project_file_path(@project), :class => 'icon icon-add' %>
+<%= link_to(l(:label_attachment_new), new_project_file_path(@project), :class => 'icon icon-add') if User.current.allowed_to?(:manage_files, @project) %>
 </div>
 
 <h2><%=l(:label_attachment_plural)%></h2>