update theme

MediaBrowser.WebDashboard/MediaBrowser.WebDashboard.csproj

@@ -347,6 +347,12 @@
     <Content Include="dashboard-ui\scripts\sections.js">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="dashboard-ui\themes\holiday\style.css">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+    <Content Include="dashboard-ui\themes\holiday\theme.js">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="dashboard-ui\thirdparty\jquerymobile-1.4.5\jqm.checkbox.css">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>