Controller for rendering a content page or a content include.
Renders a content asset in order to include it into other pages via remote include. If there is no content ID in the httpParameterMap, it logs a warning.
Renders a content page based on the rendering template configured for the page or a default rendering template.
It uses the content ID in the httpParameterMap to find the content asset, updates the page metadata, and renders it using the content/content/contentpage template. If there is no content ID, it logs a warning and sets the response status to 410.