修复作业搜索条出现在竞赛，需求页面的bug

app/views/bids/_list_projects.html.erb

@@ -1,3 +1,4 @@
+<% if @bid.reward_type == 3%>
 <%= form_tag(:controller => 'bids', :action => "show_project", :method => :get) do %>
 <div class="project-search-block">
 	<table width="100%" valign="center">
@@ -15,6 +16,7 @@
 	</table>
 </div>
 <% end %>
+<% end %>
 <% bidding_project.each do |b_project|%>
 <% if b_project.project %>