Add a timer option to Do Not Disturb mode

[apcamargo]

Many people disable notifications when they want to concentrate on some task and it's not unusual to forget to turn them on again. It'd be nice to add a timer to the 'Do Not Disturb' mode, just like some messenger applications already do.

[franklevel]

It would be great!

[steakscience]

I wonder if the best place for this is in the Wingpanel

[janxkoci]

There could be another toggle for timer appearing after Do Not Disturb is toggled on. Clicking it would open Switchboard with appropriate settings. Just an idea.

[janxkoci]

There could be another toggle for timer appearing after Do Not Disturb is toggled on.

The second toggle I mentioned before could have some default value (say 1 hour), that could be configured from switchboard. This way there would be just two toggles in the indicator, one greyed out unless the other is enabled.

However I think that the user is already informed about the state of "Do not disturb" just by looking at the indicator icon. I think the original goal was to make it easily visible and noticible when it's enabled/disabled and this still works as intended.

[danirabbit]

Making a note that any UI here depends on #11