JOE does not generate graphviz diagram when job chain title contains quotes

As Of Now Situation

• If a Job Chain has a quote in its title, JOE is not able to generate the Job Chain diagram. The diagram panle is empty.
• Job Chain configuration

• job_chain title="<a href="https://change.sos-berlin.com/browse/JOE-238">JIRA Issue JOE-238</a>">
  <job_chain_node error_state="error" job="job1" next_state="2" state="1"/>
  <job_chain_node error_state="error" job="job2" next_state="3" state="2"/>
  <job_chain_node error_state="error" job="job3" next_state="success" state="3"/>
  <job_chain_node state="success"/>
  <job_chain_node state="error"/>
  </job_chain>
  

How To Reproduce

• Open attached JobScheduler configuration in JOE JOE-238.zip.
• Click the diagram tab of the Job Chain view.

Desired Behavior

• JOE should generate Job Chain diagram even when a title contains a quote.