MDL-66360 mod_forum: added settings for send notifications default val

AMOS BEGIN
 CPY [sendstudentnotifications, mod_assign],[sendstudentnotifications, mod_forum]
 CPY [sendstudentnotifications_help, mod_assign],[sendstudentnotifications_help, mod_forum]
AMOS END

mod/forum/lang/en/forum.php

@@ -639,6 +639,8 @@ $string['searchuserid'] = 'The Moodle ID of the author';
 $string['searchwhichforums'] = 'Choose which forums to search';
 $string['searchwords'] = 'These words can appear anywhere in the post';
 $string['seeallposts'] = 'See all posts made by this user';
+$string['sendstudentnotificationsdefault'] = 'Default setting for "Notify students"';
+$string['sendstudentnotificationsdefault_help'] = 'Set the default value for the "Notify students" checkbox on the grading form.';
 $string['settings'] = 'Settings';
 $string['shortpost'] = 'Short post';
 $string['showingcountoftotaldiscussions'] = 'Showing {$a->count} of {$a->total} discussions';

mod/forum/mod_form.php

@@ -235,6 +235,8 @@ class mod_forum_mod_form extends moodleform_mod {
         $gradefieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'grade');
         $gradecatfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradecat');
         $gradepassfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber, 'gradepass');
+        $sendstudentnotificationsfieldname = component_gradeitems::get_field_name_for_itemnumber($component, $itemnumber,
+                'sendstudentnotifications');
 
         // The advancedgradingmethod is different in that it is suffixed with an area name... which is not the
         // itemnumber.
@@ -304,6 +306,14 @@ class mod_forum_mod_form extends moodleform_mod {
         $mform->setDefault($gradepassfieldname, '');
         $mform->setType($gradepassfieldname, PARAM_RAW);
         $mform->hideIf($gradepassfieldname, "{$gradefieldname}[modgrade_type]", 'eq', 'none');
+
+        $mform->addElement(
+                'selectyesno',
+                $sendstudentnotificationsfieldname,
+                get_string('sendstudentnotificationsdefault', 'forum')
+        );
+        $mform->addHelpButton($sendstudentnotificationsfieldname, 'sendstudentnotificationsdefault', 'forum');
+        $mform->hideIf($sendstudentnotificationsfieldname, "{$gradefieldname}[modgrade_type]", 'eq', 'none');
     }
 
     function definition_after_data() {