MOBILE-2915 rating: Change string "No rating" to "None"

scripts/langindex.json

@@ -1599,7 +1599,6 @@
   "core.rating.aggregatemax": "moodle",
   "core.rating.aggregatemin": "moodle",
   "core.rating.aggregatesum": "moodle",
-  "core.rating.norating": "local_moodlemobileapp",
   "core.rating.noratings": "moodle",
   "core.rating.rating": "moodle",
   "core.rating.ratings": "moodle",

src/assets/lang/en.json

@@ -1599,7 +1599,6 @@
     "core.rating.aggregatemax": "Maximum rating",
     "core.rating.aggregatemin": "Minimum rating",
     "core.rating.aggregatesum": "Sum of ratings",
-    "core.rating.norating": "No rating",
     "core.rating.noratings": "No ratings submitted",
     "core.rating.rating": "Rating",
     "core.rating.ratings": "Ratings",

src/core/rating/components/rate/rate.ts

@@ -72,7 +72,7 @@ export class CoreRatingRateComponent implements OnChanges {
         // Add "No rating" item to the scale.
         if (!this.scale.items[0] || this.scale.items[0].value != CoreRatingProvider.UNSET_RATING) {
             this.scale.items.unshift({
-                name: this.translate.instant('core.rating.norating'),
+                name: this.translate.instant('core.none'),
                 value: CoreRatingProvider.UNSET_RATING
             });
         }

src/core/rating/lang/en.json

@@ -4,7 +4,6 @@
     "aggregatemax": "Maximum rating",
     "aggregatemin": "Minimum rating",
     "aggregatesum": "Sum of ratings",
-    "norating": "No rating",
     "noratings": "No ratings submitted",
     "rating": "Rating",
     "ratings": "Ratings"