修改《若有某公开课程courseA，在课程主页中搜索courseA跳转到搜索结果界面，相关链接没有对齐》bug

Signed-off-by: alan <547533434@qq.com>

app/views/contests/index.html.erb

@@ -10,7 +10,7 @@
           <td class="location-list">
             <strong><%= l(:label_user_location) %> :</strong>
           </td>
-          <td rowspan="2">
+          <td rowspan="2" valign="bottom">
             <% if User.current.logged? %>
                 <% unless User.current.user_extensions.identity == 1 %>
                     <%= link_to(l(:label_newtype_contest),  new_contest_contests_path, :class => 'icon icon-add', :target => "_blank") %>

app/views/courses/search.html.erb

@@ -13,7 +13,7 @@
           <td class="location-list">
             <strong><%= l(:label_user_location) %> :</strong>
           </td>
-          <td rowspan="2">
+          <td rowspan="2" valign="bottom">
             <% if User.current.logged?%>
                 <% if User.current.user_extensions.identity == 0 %>
                     <%= link_to(l(:label_course_new), {:controller => 'courses', :action => 'new'}, :class => 'icon icon-add') if User.current.allowed_to?(:add_course, nil, :global => true) %></td>

app/views/projects/search.html.erb

@@ -10,7 +10,7 @@
 			<tr>
 				<td class="info_font" style="width: 220px; color: #15bccf"><%= l(:label_course_practice) %></td>
 				<td class="location-list"><strong><%= l(:label_user_location) %> :</strong></td>
-				<td rowspan="2">
+				<td rowspan="2" valign="bottom">
 				<% if User.current.logged?%>
 					<% if User.current.user_extensions.identity == 0 %>
 					<%= link_to(l(:label_course_new), {:controller => 'projects', :action => 'new', :course => 1, :project_type => @project_type}, :class => 'icon icon-add') if User.current.allowed_to?(:add_project, nil, :global => true) %></td>
@@ -35,7 +35,7 @@
 				<tr>
 					<td class="info_font" style="width: 220px; color: #15bccf"><%= l(:label_project_deposit) %></td>
 					<td class="location-list"><strong><%= l(:label_user_location) %> :</strong></td>
-					<td rowspan="2">
+					<td rowspan="2" valign="bottom">
 					<% if User.current.logged? %>
 					<%= link_to(l(:label_project_new), {:controller => 'projects', :action => 'new', :course => 0, :project_type => @project_type}, :class => 'icon icon-add') if User.current.allowed_to?(:add_project, nil, :global => true) %>
 					<% end %>