Implement Content Security Policy #211
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default to only allowing content from self, blocks all frame loading
allow loading from CA State Template, Google Fonts
* allow <style> tags to load from our app, CA State Template, Google Fonts * allow 'unsafe-inline' for jQuery dynamic styles/elements
allow <script> tags from our app, CA State Template, Amplitude, jQuery, Littlepay
allow javascript to connect to Amplitude
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Closes #203.
Testing this PR
The Content Security Policy blocks assets from loading unless configured correctly. After
git checkoutthe branch, load the app in your browser and run through the flow - you should see no errors in loading scripts, styles, fonts, etc. and all images, styles, etc. should be applied and visible.To break the Policy and see what happens, comment out everything after the
CSP_DEFAULT_SRCdirective insettings.py. Then load the app locally and check the browser console: