修改了部分小bug

app/views/bids/show.html.erb

@@ -4,7 +4,7 @@
     <td width="50" valign="top"><%= link_to image_tag(url_to_avatar(@bid.author), :class => "avatar"), user_path(@bid.author), :class => "avatar" %></td>
     <td><table width="100%" border="0">
       <tr>
-        <td><h3><%= link_to(@bid.author.firstname+@bid.author.lastname, user_path(@bid.author))%>：<%= @bid.name %></h3></td>
+        <td><h3><%= link_to(@bid.author.lastname+@bid.author.firstname, user_path(@bid.author))%>：<%= @bid.name %></h3></td>
         <td>
         	<!-- 在这里添加赞和踩-->
 	      <span id="praise_tread" style="float: right"> 

app/views/layouts/base_courses.html.erb

@@ -73,7 +73,7 @@
 											</tr> -->
 											                                      
 											<tr>
-												<td valign="top" style="padding-left: 8px;">主讲老师：</td><td class="font_lighter_sidebar"><%= @course.teacher.firstname+@course.teacher.lastname %></td>
+												<td valign="top" style="padding-left: 8px;">主讲老师：</td><td class="font_lighter_sidebar"><%=@course.teacher.lastname+@course.teacher.firstname %></td>
 											</tr>
 											
 											<tr>

app/views/layouts/base_homework.html.erb

@@ -46,7 +46,7 @@
 										</table>
 										<table>
 											<tr>
-												<td><%= l(:label_teacher) %> : <%= link_to(@user.firstname+@user.lastname, user_path(@user))%></td>
+												<td><%= l(:label_teacher) %> : <%= link_to(@user.lastname+@user.firstname, user_path(@user))%></td>
 											</tr>
 											<tr>
 												<td><%= l(:label_course_homework) %> : <%= link_to(@bid.courses.first.name, project_path(@bid.courses.first))%></td>