This commit adds a rating text field called `rating_avg_text` to display a text based on the value of `rating_avg` field in `rating.mixin` model. Here is the text displayed based on the value of `rating_avg`: 1. 'Satisfied' if the `rating_avg >= 3.66` 2. 'Okay' if the `2.33 <= rating_avg < 3.66` 3. 'Dissatisfied' if the `1 <= rating_avg < 2.33` 4. 'No Rating' if the `rating_avg < 1`