Add CSP headers to Yesod apps

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MIT licensed by Bob Long
Maintained by [email protected]

Module documentation for

This version can be pinned in stack with:[email protected]:aefee39b233dbd308416aeeeb8d5a012335909717ce13919a0445491be3bdbdb,1801

Add CSP headers to Yesod apps. This helps reduce exposure to XSS attacks and bad assets.