Page ratings

[quoininc-huudatran]

Introduce ratings on all pages.

To be answered:

• Why is the "no ratings" has a full star?
• Do all pages have ratings?
• Should we have a number of submitted ratings?
• Can we read other people's ratings and comments?
• If you come back to the page, is there an indicator that you already submitted a rating?
• Can you see your previous rating?
• Can you update your previous rating?
• Can you delete your previous rating?

[quoininc-huudatran]

Logged in users should be able to see all ratings and comments.
Non-logged in users can submit a rating and comment, but will not see any other comments.
Logged in users can edit their previous rating/comments, but not delete.