Add support for push notifications #339
Description
Feature Proposal
Push notifications would be useful in a handful of situations such as notifying users when they are invited to view someone's profiles. Our best bet seems to be using django-push-notifications to handle the actual sending of notifications.
Device Registration
In order to send a push notification, we need a device ID for the user. To accomplish this, we need an endpoint that allows registration of a user's device.
Sending Notifications
When a notification-worthy event occurs, we can get all the user's registered devices and send the notifications to them.