Also MDL-17585 Improve layout of manual grading forms to make them look more like formslib forms. The standard trick of stealing the HTML and class names that formslib works, so the standard style rules apply to your form.
As well as highlighting graded questions with a new CSS class highlightgraded which is a yellow bg in the standard theme, have also added the option to grade all ungraded attempts for a question.
Also added a drop down box to select question to mark instead of the viewquestions table. The drop down box is available at the top of every page, but only if there is more than one manually gradeable question in the quiz. If there is only one question it is automatically selected for marking.
Also added a new constant QUESTION_EVENTS_GRADED during a general refactoring of UI code in grading report and some improvements to efficiency of SQL in report.
Merged from Moodle 1.9 branch
