Configurable ScienceBase metadata publishing endpoint

[eyeyellow]

Closing issues

Closes #708

Pull Request

• Please check if the PR fulfills these requirements

  • The commit message follows our guidelines
  • Tests for the changes have been added (for bug fixes / features)
  • Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

  • This adds a user-configurable url field in settings that allows you to specify the endpoint for publishing to ScienceBase.

• What is the current behavior? (You can also link to an open issue here)

  • Currently the API endpoint it hard-coded in the app.

• What is the new behavior (if this is a feature change)?

  • Going forward, users will be able to specify in the settings where they want to publish the metadata.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

  • No