Fixed a lot of possible issues raised by a code inspection

app/src/main/java/com/cappielloantonio/play/model/Genre.java

@@ -22,14 +22,34 @@ public class Genre implements Parcelable {
         return id;
     }
 
+    public void setId(String id) {
+        this.id = id;
+    }
+
     public String getName() {
         return name;
     }
 
+    public void setName(String name) {
+        this.name = name;
+    }
+
     public int getSongCount() {
         return songCount;
     }
 
+    public void setSongCount(int songCount) {
+        this.songCount = songCount;
+    }
+
+    public int getAlbumCount() {
+        return albumCount;
+    }
+
+    public void setAlbumCount(int albumCount) {
+        this.albumCount = albumCount;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;