Add option to opt-out of alerts assigned to yourself

Add option to opt-out of alerts assigned to yourself

In JXD there was an opt-out feature so users did not get alerts they assign to themselves. This is intuitive because you know you just assigned an action to yourself. This would be particular helpful in multi-step workflows. When a multi-step workflow is kicked off with say four steps and they are each assigned to yourself the user gets four alerts for each action but they know they just started the workflow and do not need the alerts. Having an opt-out feature would be very helpful.

The action alert system is almost unmanageable int JXC so this would help cut down on unnecessary alerts.