Updated Todo
Merge branch 'master' of github.com:Oblify/Server
Implemented incremental sending of Notifications if user does not react.
Fixed property number in Arduino Code.
Primary user is now saved in settings.
Devices are now removed in UI Thread.
GetBestDeviceFor(Notification) only returns devices that did not yet receive the notification. This also returns multiple devices for one user if multiple devices have the same factor.