FR: Be able to do more from notification

[JohnVeness]

In notifications from my email client (K-9), I can see a bunch of text from the message, mark it as read, or delete it, all from the notification, even if the device is locked (anything else requires unlocking the device).

However, with Calendar Notifications Plus, as far as I can tell, all I can do from the notification itself (i.e. without having to unlock the device or go into a separate screen) is to dismiss the notification.

It would be useful to at least be able to snooze as well, maybe by it choosing the first time in the list, or by a configurable time, or maybe a little prompt (without requiring to unlock the device) after clicking snooze.