Improvements and fixes

Notifications now carry the numbers behind what happened on a plant. A closed event sends a notice with how long it lasted.

• An alarm not yet opened turns into its resolved message in place and stays unread until it is acknowledged.
• Notifications about a plant now carry the numbers behind them: the limit that was crossed, the power affected, and which sources went silent.
• A notice about an account now names where the sign-in came from: the address, the region and the device.
• Ticket notifications name the status before and after, a role change names both roles, and a cooperation invitation names the other organization.
• Every notification email now says why it was sent, links to the notification settings, and follows the device's dark mode.
• Signing in to the Mirox app now completes two-factor authentication, and its sign-in fields accept passwords saved on an iPhone or iPad.