Add comments and deprecation notices

ultrasonic/src/main/java/org/moire/ultrasonic/view/EntryAdapter.java

@@ -33,6 +33,8 @@ import org.moire.ultrasonic.util.ImageLoader;
 import java.util.List;
 
 /**
+ * This is the adapter for the display of a single list item (song, album, etc)
+ *
  * @author Sindre Mehus
  */
 public class EntryAdapter extends ArrayAdapter<Entry>

ultrasonic/src/main/java/org/moire/ultrasonic/view/UpdateView.java

@@ -14,6 +14,12 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.WeakHashMap;
 
+/**
+ * A View that is periodically refreshed
+ * @deprecated
+ * Use LiveData to ensure that the content is up-to-date
+ **/
+@Deprecated
 public class UpdateView extends LinearLayout
 {
 	private static final WeakHashMap<UpdateView, ?> INSTANCES = new WeakHashMap<UpdateView, Object>();