DD-521 Default license

[janvanmansum]

Fixes DD-512

Description of changes

• Added column isDefault to the license table.
• Added API endpoint for setting default license as specified in DD-520 (see comment of 2021-06-22).

How to test

1. Start with base box with Dataverse v5.5 on it (not the DANS-DataStation branch because the database update will probably not work when starting from the license table without the extra column)

2. Build this PR

3. Deploy the new war

4. Add an extra license, for example:

   {
    "name": "CC-BY",
    "uri": "http://creativecommons.org/licenses/by/4.0",
    "iconUrl": "https://licensebuttons.net/l/by/3.0/88x31.png",
    "active": true
   }

5. Set the default to this new license: curl -X PUT -H 'Content-Type: text/plain' -d <id> http://localhost:8080/api/admin/licenses/default (set <id> to the id of the new license).

6. Create a new dataset and check that by default the license is set correctly.

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@DANS-KNAW/dataversedans

[mderuijter]

@janvanmansum Works as advertised, proper default license is shown.

One issue though:

License icon is not rendered properly, maybe a faulty link?

[janvanmansum]

@mderuijter what happens when you click https://licensebuttons.net/l/by/3.0/88x31.png ?

[mderuijter]

@mderuijter what happens when you click https://licensebuttons.net/l/by/3.0/88x31.png ?

No image, so it's the link

[janvanmansum]

Merging this, we should think about a good "alternative text" when the image does not load.