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

shared/components/Breadcrumb.js

@@ -18,11 +18,10 @@ type Props = {
 };
 
 const Breadcrumb = observer(({ document, collections, onlyText }: Props) => {
-  const path = document.pathToDocument.slice(0, -1);
-  if (!document.collection) return null;
+  const collection = collections.get(document.collectionId);
+  if (!collection) return null;
 
-  const collection =
-    collections.data.get(document.collection.id) || document.collection;
+  const path = collection.pathToDocument(document).slice(0, -1);
 
   if (onlyText === true) {
     return (