MSC3930: Polls push rules/notifications (#3930)
* Split poll notifications out to their own MSC
* Assign number
* Update proposals/3930-polls-notifications.md
* Change sync behaviour; Add links; Account for room versions
* spelling
* Update proposals/3930-polls-notifications.md
Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
* Clarity around rule order
* spelling
* Use modern push rule practices
* More using of modern push rule practices
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Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
