Refactored handling of default data

This refactores the default data setting. Into a 'Enable default data' with the options:

• No
• Yes
• Yes and show Page Not Found when no data is retrieved.
• Yes and show Access Denied when no data is retrieved.

The setting for require default data is replaced by the above. And this is also backwards compatible.

Closes #3439507

assigned to @kainuk

added 4 commits

• 2a688b2c...8a11762a - 3 commits from branch project:2.0.x
• 9a3da34b - Merge branch '2.0.x' into '3439507-add-option-for-enable-defaultdata'

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added 1 commit

• c4404fbe - Update after merge conflicts

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merged