Add configuration options for sorting

**Feature request**
It would be great to have sorting for core.

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

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

Start by locating the core configuration handling and existing configuration options in the repository. Determine what data should be sorted and which ordering is expected, since the issue does not specify either. Done means sorting behavior is controlled by enable_sorting, defaults to false, and is covered by the relevant tests.

Written by the indexing model from the issue text.