NotificationControl: implemented default settings for all apps
When default settings are enabled, all apps that have no active explicit
notification control settings will use default settings
NotificationControl: option to reset app settings to defaults
SignalCluster: fixed broken mobile icons on some MTK devices

All fields were being stored on the first run and that was breaking
mobile icons coloring and even causing data activity and mobile type not
to show up on some MTK devices. So, not all field can be stored because
they are dynamic and can change on each method call.