将“项目讨论区”简化为“项目讨论”，与其他列表一致

app/views/users/user_messages.html.erb

@@ -19,7 +19,7 @@
         <li>
           <ul class="homepagePostTypeProject fl">
             <li><%= link_to "项目任务", user_message_path(User.current, :type => 'issue'), :class => "resourcesGrey"  %></li>
-            <li><%= link_to "项目讨论区", user_message_path(User.current, :type => 'forge_message'), :class => "resourcesGrey"  %></li>
+            <li><%= link_to "项目讨论", user_message_path(User.current, :type => 'forge_message'), :class => "resourcesGrey"  %></li>
             <li><%= link_to "项目新闻", user_message_path(User.current, :type => 'forge_news'), :class => "resourcesGrey"  %></li>
             <li><%= link_to "用户申请", user_message_path(User.current, :type => 'apply'), :class => "resourcesGrey" %></li>