Merge branch 'redeWiedergabe_dev' into 'master'

added new names to the metadata dialog; changed not defined to undefined

See merge request !77
4 jobs for master in 18 minutes and 7 seconds
Status Name Job ID Coverage
  Test
passed testbuild #19982

00:04:21

 
  Builddeploy
passed deploy-release #19984

00:04:23

passed deploy-softwaresite #19985

00:05:07

passed deploy-updatesite #19983

00:04:15