Customizing log level

In the default configuration, the system generates extremely verbose logs.

Is it possible to adjust the log level downwards by editing the `application.properties` file somehow?

The issue names application.properties but no implementation file or test. Start by locating where logging is configured and checking whether application.properties is read; done means providing a working way to reduce the default log verbosity and documenting the setting.

Written by the indexing model from the issue text.