rework playlist editor

MediaBrowser.WebDashboard/MediaBrowser.WebDashboard.csproj

@@ -200,6 +200,9 @@
     <Content Include="dashboard-ui\components\paperdialoghelper.js">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="dashboard-ui\components\playlisteditor\playlisteditor.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="dashboard-ui\components\prompt.js">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>