Added action_buttons to import, export and add iLM

ilm_handlers/html5.php

@@ -542,6 +542,8 @@ class html5 implements ilm_handle {
     $application_descriptor .= '  <reevaluate>' . $iassign_ilm->reevaluate . '</reevaluate>' . "\n";
     $application_descriptor .= '  <editingbehavior>' . $iassign_ilm->editingbehavior . '</editingbehavior>' . "\n";
     $application_descriptor .= '  <submissionbehavior>' . $iassign_ilm->submissionbehavior . '</submissionbehavior>' . "\n";
+    $application_descriptor .= '  <action_buttons>' .
+    $iassign_ilm->action_buttons . '</action_buttons>' . "\n";
 
     if ($iassign_ilm_configs) { //MOOC 2016
       $application_descriptor .= '   <params>' . "\n";
@@ -817,6 +819,7 @@ class html5 implements ilm_handle {
         $newentry->parent = $iassign_ilm->id;
         $newentry->editingbehavior = (String) $application_xml->editingbehavior;
         $newentry->submissionbehavior = (String) $application_xml->submissionbehavior;
+        $newentry->action_buttons = (String) $application_xml->action_buttons;
 
         $newentry->id = $DB->insert_record("iassign_ilm", $newentry);
 
@@ -907,6 +910,7 @@ class html5 implements ilm_handle {
         $newentry->reevaluate = (String) $application_xml->reevaluate;
         $newentry->editingbehavior = (String) $application_xml->editingbehavior;
         $newentry->submissionbehavior = (String) $application_xml->submissionbehavior;
+        $newentry->action_buttons = (String) $application_xml->action_buttons;
         $newentry->parent = $iassign_ilm->id;
 
         //MOOC 2016 $newentry->id = $DB->insert_record("iassign_ilm", $newentry);