Requirements: This module requires Individual Push notification module as a dependency.
 
This simple module allows app admin to create user groups for notification.
Feature:
More control over push notification – App owner can send push notification to selected group
User can be added to one or more groups by admin or App owner
Push sent will be received by only group members
It uses topics as Group so that sending push can be sent with official push notification feature
Admin / App owner can add/remove user from a Group
If allowed user can them self  subscribe to group using topics feature
You can deactivate topic feature so that only admin can add/remove user to group
You can have topics feature enabled along with this module so that both user can subscribe them self and admin can also control it.
When user is editing by admin all his subscription get resets to force admins selection.
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