fix(fix csp errors): cSP errors were generated in console

[waterweasel4]

Pull Request

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Fixes #565

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• A bug fix
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I think that the CSP errors are fixed now.  When I tested locally, I cannot reproduce any longer.  

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Checklist

• My code follows the contributing guidelines of this project
• I have performed a self-review of my own code
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[waterweasel4]

Moved app.use(helmet()); up in the code a bit.