New feature: dismiss event from notification

[gsbernstein]

Status

READY

Description

I often found myself wanting to dismiss events from the notification, rather than dismissing the notification and then opening the menu and then dismissing the event.

Also:

• consolidated handling of events in the response handler
• fixed a couple minor typos

Note:

• for personal use, I have disabled the notification_next_meeting_dismissed_title notification triggered by dismissing. I find it more annoying than useful. This change might make that even more apparent. I'd be happy to remove that as well or add it as an option to settings.

Checklist

• Localized
• Added to changelog:
  • Changelog View
  • CHANGELOG.md

Steps to Test or Reproduce

• create an event in the near future
• await notification
• open the notification actions
• select "dismiss"

[gsbernstein]

Note: I added to the changelogs as requested but they both seem out of date. Are they deprecated? Should I updated the PR template?