Disable search index of the inbuilt Lucene.NET

Search indices can be disabled for the inbuilt Lucene.NET for PIM and Websites except Sells.

When Elasticsearch is configured in the project then searching on a site is working with Elasticsearch.
In this case, the project does not need to have Lucene.NET indices for PIM and Websites.
To disable indices for PIM and Websites you need to add the following lines to web.config.

	<add key="Litium:Search:Indexing:Product" value="false" />
	<add key="Litium:Search:Indexing:Website" value="false" />