[QA] Make knowledge base and version selectable in config

As a user, I want to see the knowledge base and its version (e.g. DBpedia 2016-10 or Wkidata live) used for each dataset and there should be an option to compare the system answers against the answers from the dataset file or against the live endpoint (via a radio button).

Start by locating the configuration UI and the dataset evaluation flow in the Java project. Trace how each dataset is identified and how answers are currently compared, then verify that the knowledge base and version are shown and that a radio-button choice selects dataset-file or live-endpoint comparison.

Written by the indexing model from the issue text.