Stops notifications on direct messages when set to disabled

...ketchat-push-notifications/server/models/Subscriptions.js

packages/rocketchat-ui-sidenav/client/channels.coffee

packages/rocketchat-ui-sidenav/client/combined.coffee

packages/rocketchat-ui-sidenav/client/directMessages.coffee

packages/rocketchat-ui-sidenav/client/privateGroups.coffee

packages/rocketchat-ui-sidenav/client/starredRooms.coffee

packages/rocketchat-ui-sidenav/client/unreadRooms.coffee