during a security scan I have got the advise to fix a potential XSS security vulnerability in
<form id="drawio_form">. Though I would evaluate the risk rather low I added a fix.
I also translated the labels in the form to German.
I send you the patch file this way instead of a pull request since I was not sure what you prefer w.r.t. security issues.
Isse received by email from Liaham:
xss_security_vulnerability_fix.zip