Rescheduling alarms every week / running them only once

[mvarendorff]

Alarms are scheduled for one week and would have to be manually rescheduled after that.
Neither should it be that way, nor does the UI reflect this.
Things that need to be done in this regard:

• Update the UI to include options to repeat an alarm every week
  • Actually repeat the alarm every week
• Reflect in the UI when an alarm will go off. If an alarm is not set to repeat every week, days should be set to disabled once the alarm went off on the respective day