修复项目和课程讨论区所有帖子显示页面各帖子内容没对齐的bug；

app/views/boards/_course_show.html.erb

@@ -63,7 +63,9 @@
               <td>
                 <table width="640px" border="0">
                   <tr>
-                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %> <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject), board_message_path(@board, topic) %></td>
+                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %>
+                    <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject.truncate(40,ommision:'...')), board_message_path(@board, topic),title: topic.subject.to_s %>
+                    </td>
                     <td align="right" rowspan="3"><table class="borad-count"><tr><td align="center" class="borad-count-digit"><%=link_to (topic.replies_count), board_message_path(@board, topic) %></td></tr>
                       <tr><td align="center">回答</td></tr>
                     </table></td>

app/views/boards/_project_show.html.erb

@@ -71,7 +71,9 @@
               <td>
                 <table width="640px" border="0">
                   <tr>
-                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %> <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject), board_message_path(@board, topic) %></td>
+                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %>
+                    <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject.truncate(40,ommision:'...')), board_message_path(@board, topic),title:topic.subject.to_s %>
+                    </td>
                     <td align="right" rowspan="3">
                       <table class="borad-count">
                         <tr>