student list items centered (again)

sails/src/assets/scripts/modules/supervisor/views/students.html

@@ -40,7 +40,7 @@
     <table id="table_students" class="table table-hover">
       <tr ng-repeat="student in students | filter:search_students | orderBy: ['surname', 'name']">
         <td>
-            <div class="thumbnail img_profile_small">
+            <div class="thumbnail img_profile_small student-list-btn">
               <img ng-src="{{student.pic}}" alt="" title="" />
             </div>
         </td>

sails/src/assets/styles/main.css

@@ -880,7 +880,7 @@ img.profile{
 }
 
 .student-list-btn {
-	margin-top: 10px;
+	margin-top: 5px;
 }
 
 .student-list-text {