Add 5-star rating system(#986)

* Added Star Rating functionality for Songs

* Added Star Rating functionality for Artists

* Added Star Rating functionality for AlbumListView

* Added Star Rating functionality for AlbumDetails and improved typography for title

* Added functionality to turn on/off Star Rating functionality for Songs

* Added functionality to turn on/off Star Rating functionality for Artists

* Added functionality to turn on/off Star Rating functionality for Albums

* Added enableStarRating to server config

* Resolved the bugs and improved the ratings functionality.

* synced repo and removed duplicate key

* changed the default rating size to small, and changed the color to match the theme.

* Added translations for ratings, and Top Rated tab in side menu.

* Changed rating translation to topRated in albumLists, and added has_rating filter to topRated.

* Added empty stars icon to RatingField.

* Added sortable=false in AlbumSongs and added sortByOrder=DESC in all List components.

* Added translations for rating, for artists and albums, and removed the sortByOrder=DESC from SimpleLists.

ui/src/album/albumLists.js

@@ -4,6 +4,7 @@ import VideoLibraryIcon from '@material-ui/icons/VideoLibrary'
 import RepeatIcon from '@material-ui/icons/Repeat'
 import AlbumIcon from '@material-ui/icons/Album'
 import FavoriteIcon from '@material-ui/icons/Favorite'
+import StarIcon from '@material-ui/icons/Star'
 import config from '../config'
 
 export default {
@@ -18,6 +19,12 @@ export default {
       params: 'sort=starred_at&order=DESC&filter={"starred":true}',
     },
   }),
+  ...(config.enableStarRating && {
+    topRated: {
+      icon: StarIcon,
+      params: 'sort=rating&order=DESC&filter={"has_rating":true}',
+    },
+  }),
   recentlyAdded: {
     icon: LibraryAddIcon,
     params: 'sort=recently_added&order=DESC',