JOE should not remove node parameters when renaming a job chain.

Current Situation

When having a job chain with node parameters configured in the file job_chain.config.xml and then renaming the job chain with JOE, an empty configuration file for the node paramters will be created. Therefore all defined node parameters are gone.

Desired Behaviour

When renaming a job chain with JOE the node parameters should not be deleted. The file job_chain.config.xml should be renamed and the entry <job_chain name="job_chain_name"> should have the correct value for the attribute name