-Added dropdown menu for background player activity.

-Added icons for shuffle and drag handle.
-Fixed exception when returning to background player activity after service shuts down.
-Fixed open detail only working for Youtube.

app/src/main/res/layout/activity_background_player.xml

@@ -209,7 +209,7 @@
             android:clickable="true"
             android:focusable="true"
             android:scaleType="fitXY"
-            android:src="@drawable/ic_palette_white_24dp"
+            android:src="@drawable/ic_shuffle_white_24dp"
             tools:ignore="ContentDescription"/>
 
         <TextView

app/src/main/res/layout/play_queue_item.xml

@@ -29,8 +29,10 @@
         android:layout_height="match_parent"
         android:layout_gravity="center_vertical"
         android:layout_alignParentRight="true"
+        android:layout_marginLeft="10dp"
+        android:layout_marginRight="5dp"
         android:scaleType="center"
-        android:src="?attr/filter"
+        android:src="?attr/reorder"
         tools:ignore="ContentDescription,RtlHardcoded"/>
 
     <TextView

app/src/main/res/menu/menu_play_queue.xml

@@ -0,0 +1,20 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="org.schabi.newpipe.history.HistoryActivity">
+
+    <item android:id="@+id/action_history"
+        android:orderInCategory="981"
+        android:title="@string/action_history"
+        app:showAsAction="never"/>
+
+    <item android:id="@+id/action_settings"
+        android:orderInCategory="990"
+        android:title="@string/settings"
+        app:showAsAction="never"/>
+
+    <item android:id="@+id/action_system_audio"
+        android:orderInCategory="996"
+        android:title="@string/play_queue_audio_settings"
+        app:showAsAction="never"/>
+</menu>

app/src/main/res/values/attrs.xml

@@ -18,6 +18,7 @@
     <attr name="palette" format="reference"/>
     <attr name="language" format="reference"/>
     <attr name="history" format="reference"/>
+    <attr name="reorder" format="reference"/>
 
     <!-- Can't refer to colors directly into drawable's xml-->
     <attr name="toolbar_shadow_drawable" format="reference"/>

app/src/main/res/values/strings.xml

@@ -293,6 +293,10 @@
     <string name="new_and_hot">New &amp; hot</string>
     <string name="service_kiosk_string" translatable="false">%1$s/%2$s</string>
 
-    <!-- Player -->
+    <!-- Play Queue -->
     <string name="title_activity_background_player">Background Player</string>
+    <string name="play_queue_remove">Remove</string>
+    <string name="play_queue_stream_detail">Details</string>
+    <string name="play_queue_audio_settings">Audio Settings</string>
+
 </resources>

app/src/main/res/values/styles.xml

@@ -25,6 +25,7 @@
         <item name="palette">@drawable/ic_palette_black_24dp</item>
         <item name="language">@drawable/ic_language_black_24dp</item>
         <item name="history">@drawable/ic_history_black_24dp</item>
+        <item name="reorder">@drawable/ic_reorder_black_24dp</item>
 
         <item name="selector_color">@color/light_selector</item>
         <item name="separator_color">@color/light_separator_color</item>
@@ -60,6 +61,7 @@
         <item name="palette">@drawable/ic_palette_white_24dp</item>
         <item name="language">@drawable/ic_language_white_24dp</item>
         <item name="history">@drawable/ic_history_white_24dp</item>
+        <item name="reorder">@drawable/ic_reorder_white_24dp</item>
 
         <item name="selector_color">@color/dark_selector</item>
         <item name="separator_color">@color/dark_separator_color</item>