Ratingmdl field adjustments, including:
- Rating permissions view, viewany, viewall, rate in dataformfield_ratingmdl_ratingmdl::permissions() are always true.
- No capability checks when displaying the field elements.
- Events for rating created and deleted.
- Interface implementation grading and usingscale.
- Incorrect field class name reference in the field renderer.
- Removing clone permissions.
- Initial acceptance and unit testing.