Tune email notifs to make them quieter:

[ara4n]

• After initial 10 minute alert from a previously inactive room, only alert every 24h
• Reset room state back to being inactive after 6h of idleness in the room
• Synchronise throttles for messages sent in the same notif, so the 24 hourly notifs 'line up'
• Fix the email subjects to say what triggered the notification
• Order the rooms in reverse activity order in the email, so the 'reason' room should always come first
• Send accumulative notifs for all unread notifications, rather than just the delta since the last mail

[ara4n]

@dbkr: all yours now.

[dbkr]

lgtm