deal with license backward incompatibility

[pdurbin]

What this PR does / why we need it:

Due to backward incompatible changes introduced in Dataverse 5.10, we can no longer load up our sample data datasets.

This pull request changes the "license" field in each dataset JSON file in two ways.

• "CC0" has been changed to "CC 1.0"
• "NONE" has been removed (the whole line: "license":"NONE",)

Which issue(s) this PR closes:

• Closes sample datasets cannot be created in Dataverse 5.10+ due to backward incompatibility with regard to licenses #30

Special notes for your reviewer:

Please don't mind the huge diff for the datasetno dataset. The JSON was on a single line and I reformatted it with jq before fixing the "license" field. That dataset can't be published anyway. I opened #32 for that.

While the changes in this PR should allow all datasets to be created, I don't think the combination of license, termsOfUse, and termsOfAccess makes sense for a lot of these datasets. To keep this issue/PR "trivial" in size, I opened a #33 to handle this separately.

Suggestions on how to test this:

Load up the sample data specified in dvconfig.py.sample (copy this to dvconfig.py per the README).

In addition, you could enable the sample data feature in dataverse-ansible. You'd want to point to the branch for this PR like this:

  sampledata:
    enabled: false
    dir: /tmp/sampledata
    repo: https://github.com/IQSS/dataverse-sample-data.git
    branch: 30-license-backward-incompatibility
    venv: /tmp/sampledata/venv

Does this PR introduce a user interface change? If mockups are available, please link/include them here:

No.

Is there a release notes update needed for this change?:

We might want to make these incompatibility more clear in the 5.10 release notes: https://github.com/IQSS/dataverse/releases/tag/v5.10

Additional documentation:

None.

[sekmiller]

Looks good. I took a look at the files and it looks like you got them all.