MDL-21695 Replaced grade/feedback.html

AMOS BEGIN
 HLP grade/feedback.html,[feedback_help,core_grades]
AMOS END

grade/edit/tree/grade_form.php

@@ -102,7 +102,7 @@ class edit_grade_form extends moodleform {
         // Feedback format is automatically converted to html if user has enabled editor
         $feedbackoptions = array('maxfiles'=>0, 'maxbytes'=>0, 'trusttext'=>true);
         $mform->addElement('editor', 'feedback', get_string('feedback', 'grades'), null, $feedbackoptions);
-        $mform->setHelpButton('feedback', array('feedback', get_string('feedback', 'grades'), 'grade'));
+        $mform->addHelpButton('feedback', 'feedback', 'grades');
         $mform->setType('text', PARAM_RAW); // to be cleaned before display, no XSS risk
 
         // hidden params

lang/en/grades.php

@@ -231,7 +231,6 @@ $string['feedback'] = 'Feedback';
 $string['feedback_help'] = 'This box enables any comments about the grade to be added.';
 $string['feedbackadd'] = 'Add feedback';
 $string['feedbackedit'] = 'Edit feedback';
-$string['feedbackhelp'] = 'Notes added to the grade by the teacher. They can be extensive, personalised feedback or a simple code that refers to an internal system of feedback.';
 $string['feedbacksaved'] = 'Feedback saved';
 $string['feedbackview'] = 'View feedback';
 $string['finalgrade'] = 'Final grade';

lang/en/help/grade/feedback.html

@@ -1,2 +0,0 @@
-<h1>Feedback</h1>
-<p>Notes added to the grade by the teacher. They can be extensive, personalised feedback or a simple code that refers to an internal system of feedback.</p>