Re-evaulate best practices for dialogs

[MRayermannMSFT]

• [ ] Reconfirm that our Content-Security-Policy is most restrictive as possible, and that all dialogs use the policy if possible
• [ ] Determine where script elements are best declared (in head, start of body, end of body)
• [ ] Detrmine if script elements to load index filds are best done as a script elements with a src attribute, or with an inline script that calls require.
• [ ] Dialog ID formats