Issue: Ticket Alerts vs Dept Recipients

If an alert is enabled for only the Department Manager and the Department Recipients field is set to No one, the Department Manager still receives a notification.

If the recipients field is set to no one, nobody should receive an alert regardless of what is checked on the New Ticket Alert selections.

To fix this, we can do a count of what the getMembersForAlerts function returns. This function compares what is set for a Department's group_membership in the database to the ALERTS_DISABLED constant to return a query set of members that should receive an alert. If the count is 0, we know that alerts should be disabled.