Task creationInfo in fromFiles case uses nml filename. zip file name may be better if present.

[fm3]

The creationInfo field of a task (which is also sent back to the user as csv) is based on the nml file name. If the NML comes with volume data in a zip, it may be desirable to use the zip file name instead. In the reported case, all NMLs were named tracing.nml, with only the zip filenames being semantically important.

compare https://discuss.webknossos.org/t/task-creation-failed/1723/7