Shuffle: Add clear queue and play queue button

Views/Shuffle.xaml

@@ -81,7 +81,7 @@
                         <GroupBox.Header>
                             <TextBlock>
                             <emoji:EmojiInline Text="➕"/>
-                            <Run Text="{x:Static properties:Resources.Shuffle_Queue}"/>
+                            <Run Text="{x:Static properties:Resources.Queue_Management}"/>
                             </TextBlock>
                         </GroupBox.Header>
                         <StackPanel Orientation="Vertical" Margin="5,5,5,0">
@@ -96,6 +96,11 @@
                                 </TextBlock>
                                 <TextBlock x:Name="SearchStatus2" Text="{x:Static properties:Resources.Shuffle_ButtonMessage3}" Margin="3,3,0,0" FontStyle="Italic" Visibility="Collapsed"/>
                             </StackPanel>
+
+                            <StackPanel Orientation="Horizontal" Margin="0,15,0,0">
+                                <Button Content="{x:Static properties:Resources.Clear_Queue}" Click="ClearQueue_Clicked" Padding="5, 2" HorizontalAlignment="Left" FocusVisualStyle="{x:Null}"/>
+                                <Button Content="{x:Static properties:Resources.Play_Queue}" Click="StartQueue_Clicked" Padding="5, 2" Margin="5, 0" HorizontalAlignment="Left" FocusVisualStyle="{x:Null}"/>
+                            </StackPanel>
                         </StackPanel>
                     </GroupBox>
                     

Views/Shuffle.xaml.cs

@@ -375,6 +375,16 @@ namespace unison
             AddToQueue();
         }
 
+        public void ClearQueue_Clicked(object sender, RoutedEventArgs e)
+        {
+            _mpd.ClearQueue();
+        }
+
+        public void StartQueue_Clicked(object sender, RoutedEventArgs e)
+        {
+            _mpd.PlayCommand();
+        }
+
         public bool GetContinuous()
         {
             return _continuous;