dataset_description.json formatting is strange

[manuelakuhn]

When cfg_hirni creates the dataset_desciption.json file, its formatting is somewhat strange. Currently it looks like this:

{
"Acknowledgements":
"",
"Authors":
[],
"BIDSVersion":
"1.1.1",
"DatasetDOI":
"",
"Ethics":
"",
"Funding":
[],
"HowToAcknowledge":
"",
"License":
"",
"Name":
"",
"Power":
"",
"Preregistration":
"",
"ReferencesAndLinks":
[]
}

This makes it unpleasant to read. Using the standard json representation like would help here:

{
    "Acknowledgements": "",
    "Authors": [],
    "BIDSVersion": "1.1.1",
    "DatasetDOI": "",
    "Ethics": "",
    "Funding": [],
    "HowToAcknowledge": "",
    "License": "",
    "Name": "",
    "Power": "",
    "Preregistration": "",
    "ReferencesAndLinks": []
}