Added action_buttons to iassign_ilm in upgrade.php

db/upgrade.php

@@ -372,7 +372,12 @@ function xmldb_iassign_upgrade ($oldversion) {
 
       if (!$dbman->field_exists($table, $field_submissionbehavior))
         $dbman->add_field($table, $field_submissionbehavior);
+
+      $field_action_buttons = new xmldb_field('action_buttons', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', null);
       
+      if (!$dbman->field_exists($table, $field_action_buttons))
+        $dbman->add_field($table, $field_action_buttons);
+
       // Adding field to table iassign_statement:
       $table = new xmldb_table('iassign_statement');