Add plugin list last item bottom margin

Author: onesounds

Flow.Launcher/SettingWindow.xaml

@@ -191,7 +191,7 @@
         <Style x:Key="PluginList" TargetType="ListBoxItem">
             <Setter Property="Background" Value="#ffffff" />
             <Setter Property="Padding" Value="0 12 0 12" />
-            <Setter Property="Margin" Value="0 4 18 0" />
+            <Setter Property="Margin" Value="0 0 18 4" />
             <Setter Property="HorizontalContentAlignment" Value="Stretch" />
             <Setter Property="BorderBrush" Value="#e5e5e5" />
             <!--#region Template for blue highlight win10-->
@@ -537,14 +537,18 @@
                 <Border Grid.Row="0" Background="#f3f3f3" Padding="5 18 0 0">
                     <TextBlock Text="{DynamicResource plugin}" TextAlignment="left" FontSize="30" Margin="0 5 0 5"/>
                 </Border>
-                <Border Grid.Column="0" Grid.Row="1" Background="#f3f3f3">
+                <Border Grid.Column="0" Grid.Row="1" Background="#f3f3f3" Padding="0 0 0 0">
                     <ListBox SelectedItem="{Binding SelectedPlugin}"
                              ItemsSource="{Binding PluginViewModels}"
                              Margin="6, 0, 0, 0" ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                              ItemContainerStyle="{StaticResource PluginList}"
                              ScrollViewer.IsDeferredScrollingEnabled="True" ScrollViewer.CanContentScroll="False"
-                             Padding="0 0 0 18" Width="Auto" HorizontalAlignment="Stretch">
-
+                             Padding="0 0 0 0" Width="Auto" HorizontalAlignment="Stretch">
+                        <ListBox.ItemsPanel>
+                            <ItemsPanelTemplate>
+                                <StackPanel Margin="0,0,0,18"/>
+                            </ItemsPanelTemplate>
+                        </ListBox.ItemsPanel>
                         <ListBox.ItemTemplate>
                             <DataTemplate>
                                 <Expander Grid.Column="4" x:Name="expanderHeader"