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

app/utils/routeHelpers.js

@@ -1,6 +1,5 @@
 // @flow
 import Document from 'models/Document';
-import Collection from 'models/Collection';
 
 export function homeUrl(): string {
   return '/dashboard';
@@ -24,14 +23,6 @@ export function documentUrl(doc: Document): string {
   return doc.url;
 }
 
-export function documentNewUrl(doc: Document): string {
-  const newUrl = `${doc.collection.url || ''}/new`;
-  if (doc.parentDocumentId) {
-    return `${newUrl}?parentDocument=${doc.parentDocumentId}`;
-  }
-  return newUrl;
-}
-
 export function documentEditUrl(doc: Document): string {
   return `${doc.url}/edit`;
 }
@@ -60,8 +51,17 @@ export function updateDocumentUrl(oldUrl: string, newUrl: string): string {
   return newUrl;
 }
 
-export function newDocumentUrl(collection: Collection): string {
-  return `${collection.url || ''}/new`;
+export function newDocumentUrl(
+  collectionId: string,
+  parentDocumentId?: string
+): string {
+  let route = `/collections/${collectionId}/new`;
+
+  if (parentDocumentId) {
+    route += `?parentDocumentId=${parentDocumentId}`;
+  }
+
+  return route;
 }
 
 export function searchUrl(query?: string): string {