#1256，编辑帖子的按钮是图标而引用和删除都是文字，将编辑也改为文字保持一致

app/views/memos/show.html.erb

@@ -23,7 +23,8 @@
 				)if !@memo.locked? && User.current.logged? %>			
 
 			<%= link_to(
-				image_tag('edit.png'),
+				#image_tag('edit.png'),
+                l(:button_edit),
 				{:action => 'edit', :id => @memo},
 				:method => 'get',
 				:title => l(:button_edit)