* Add Content-Security-Policy header
* Add nonce attribute to script tags
* Use source-map for webpack devtool
* Add ng-csp attribute when CSP is enabled
* Allow overriding CSP settings with environment variables
* Hook into render and allow routes to disable the CSP header
GitOrigin-RevId: a873736a3514198165f1b2f1e18d002b65f20d30
