Add configuration options for analytics

**Feature request**
It would be great to have caching for components.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_caching` with default `false`.

First clarify whether this request concerns analytics or component caching, since the title and body differ. Locate the configuration entry point and the component-caching path, then determine where `enable_caching` belongs and how its default should be represented. Done means the selected behavior is controlled by the option, whose default is `false`, with relevant tests added or updated.

Written by the indexing model from the issue text.