anchor.diff:  				<% if @knowledges.size == 0 %>
   					<span class="list-group-item center">无新日志</span>
   				<% end %>
  +				<a href="/knowledges/new" class="list-group-item list_animate stop-animate text-center small">新建日志</a>
   			</div>
   		</div>
   	</div>
  
positive.code: 	<div id="content_text" class="col-xs-8 col-md-8 col-lg-9 kl-box">
  		
  	  <% if yield.blank? %>
  	  	<span class="g-hand-left glyphicon glyphicon-hand-left hand_animate stop-animate"></span>
  	  <% else %>
  	  	<%= yield %>
  	  <% end %>
  
negative.code: 			<div class="panel-heading">知识列表<span class="pull-right badge"><%=@knowledges.size %></span></div>
  			<div class="list-group">
  				<% @knowledges.each_with_index do |knowledge, i| %>
  					<%= link_to knowledge_path(knowledge), remote:true, class:"knowledge list_animate stop-animate list-group-item #{'active' if i==0}" do %>
  						<span><%= knowledge.title %></span>
  						<small class="text-warning">(<%= knowledge.author.blank? ? '匿名' : knowledge.author %>)</small>
  						<small class="pull-right"><%= knowledge.created_at.localtime.strftime("%m-%d") %></small>
  