Fixed #292

[Dkamps18]

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Problem/Feature

Fixes #292

Description of Changes:

• Fixes mock-api users/blocks not returning an empty pagination and null instead of array for data

Checklist

• My code follows the Contribution Guide
• I have self-reviewed the changes being requested
• I have made comments on pieces of code that may be difficult to understand for other editors
• I have updated the documentation (if applicable)