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/shares.js

@@ -48,10 +48,8 @@ router.post('shares.list', auth(), pagination(), async ctx => {
     limit: ctx.state.pagination.limit,
   });
 
-  const data = await Promise.all(shares.map(share => presentShare(ctx, share)));
-
   ctx.body = {
-    data,
+    data: shares.map(presentShare),
   };
 });
 
@@ -78,7 +76,7 @@ router.post('shares.create', auth(), async ctx => {
   share.document = document;
 
   ctx.body = {
-    data: presentShare(ctx, share),
+    data: presentShare(share),
   };
 });