Update example configuration file

Signed-off-by: Jerome Flesch <jflesch@wyplay.com>
Merge branch 'testing' into unstable
Main window: Doc index loading: make sure the signal index-loading-end is never emitted twice

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Merge branch 'testing' into unstable
Merge branch 'unstable' into wip-label-prediction