WIP: Add a review button on book form

internal/routes/userbookputupdate.go

@@ -71,6 +71,9 @@ func PutUserBookHandler(ac appcontext.AppContext) {
 		}
 		updateRating(&userbook, &userBookPut)
 	}
+	if userBookPut.Review != nil {
+		userbook.Review = *userBookPut.Review
+	}
 	ac.Db.Save(&userbook)
 	ac.C.String(http.StatusOK, "Success")
 }