Added view for editing GradingRecords.
Added view for editing GradingRecords.

This view shows a list of GradingRecords if the id param is not present in the GET data.

Also renamed grading_record to view_records and fixed the redirect for that page
 to also point to the GradingRecord edit page.

MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging