Refactored ./doc with es8 features
vars have been changed to const/let; Unneeded spaces/tabs have been deleted ( needed have been added ); Object element calls obj.['key'] were replaced with obj.key
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
vars have been changed to const/let; Unneeded spaces/tabs have been deleted ( needed have been added ); Object element calls obj.['key'] were replaced with obj.key