centralize input(s) property setup

For simplex rules we did set up the inputs with
setupScriptEngineForArtifact.
We removed setupScriptEngineForArtifact in favor of translateFileConfig.

Change-Id: I0df90c65ad6157e715d83e785b3ae67d92ec2088
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>