Rating resources for quality

Both students and teachers can now rate library resources on a five star scale.  Teachers can rate by clicking the star icon in the top right of the resource, reflecting their opinion of the educational value of the resource.  Students will be asked to rate about 10% of the resources they complete, based on how interesting/fun they thought they were.

Teacher and student ratings will be combined and used to rank resources within the Schoolshape library so that resources that are both educational and fun come out on top.