NROER_User preference- choice to choose theme tree/graph to be given to users
User to have an option in user dashboard to choose between 'theme tree' and 'theme graph' for 'themes'
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
User to have an option in user dashboard to choose between 'theme tree' and 'theme graph' for 'themes'