Websocket Support (#937)

* Atom / RSS meta link

* Spike

* Feeling good about this spike now

* Remove document.collection

* Remove koa.ctx from all presenters to make them portable outside requests

* Remove full serialized model from events
Move events.add to controllers for now, will eventually be in commands

* collections.create event
parentDocument -> parentDocumentId

* Fix up deprecated tests

* Fixed: Doc creation

* documents.move

* Handle collection deleted

* 💚

* Authorize room join requests

* Move starred data structure
Account for documents with no context on sockets

* Add socket.io-redis

* Add WEBSOCKETS_ENABLED env variable to disable websockets entirely for self hosted
New installations will default to true, existing installations to false

* 💚 No need for promise response here

* Reload notice

server/api/notificationSettings.js

@@ -25,7 +25,7 @@ router.post('notificationSettings.create', auth(), async ctx => {
   });
 
   ctx.body = {
-    data: presentNotificationSetting(ctx, setting),
+    data: presentNotificationSetting(setting),
   };
 });
 
@@ -38,7 +38,7 @@ router.post('notificationSettings.list', auth(), async ctx => {
   });
 
   ctx.body = {
-    data: settings.map(setting => presentNotificationSetting(ctx, setting)),
+    data: settings.map(presentNotificationSetting),
   };
 });