add rebuild the status of filefield in the mongo.

fix the problem about copying dir when lacking that dir.

app/views/admin/patchfiles/index.html.erb

@@ -39,8 +39,10 @@
 	<%end%>
 	<%=file.submit "#{t(:updatefont)}",{:id=>"updatebtn",:onclick=>"return updatefcn()"}%>
 	<%=file.text_field :recovery_btn, {:id=>"hidden-recovery",:type => "hidden",:value=>"false"} %>
+	<%=file.text_field :refresh_btn, {:id=>"hidden-refresh",:type => "hidden",:value=>"false"} %>
 	<button id="seemessage" onclick="return seelogfcn()"><%=(I18n.locale.to_s =="zh_tw") ? "查看上次更新的logs" : "see logs of prev update "%></button>
 	<button id="recoverybtn" onclick="return recoveryfcn()"><%=(I18n.locale.to_s =="zh_tw") ? "復原到上次更新的檔案狀態" : "recovery to prev file status"%></button>
+	<button id="destroy_mongofield" onclick="return destroy_mongofield_fcn()"><%=(I18n.locale.to_s =="zh_tw") ? "刷新可更新的檔案狀態" : "refresh the status of the update files"%></button>
 <%end%>
 <a>網站目錄根路徑:<%=Dir.pwd.to_s%></a>
 <li id ="ckeditorFont" class="show_li">
@@ -217,4 +219,7 @@
 		});
 		return false;
 	};
+	function destroy_mongofield_fcn(){
+		$('#hidden-refresh').val('true');
+	};
 </script>