Data hierarchy editor allows to remove default metadata group

Go to data hierarchy editor.
For any data type, delete its default metadata group and save.
Pasta will restart.
Try to edit an item of the edited data type.

Traceback (most recent call last): File "/home/htsybenko/Temp/envir/lib/python3.10/site-packages/pasta_eln/gui.py", line 132, in formDoc formWindow = Form(self.comm, doc) File "/home/htsybenko/Temp/envir/lib/python3.10/site-packages/pasta_eln/GUI/form.py", line 78, in init dataHierarchyNode['default'].append({'name':keyInDocNotHierarchy}) KeyError: 'default'

The default metadata group should not be removable.

PASTA-ELN / pasta-eln

Data hierarchy editor allows to remove default metadata group #235