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/menus/ShareMenu.js

@@ -36,11 +36,11 @@ class ShareMenu extends React.Component<Props> {
   handleRevoke = (ev: SyntheticEvent<*>) => {
     ev.preventDefault();
     this.props.shares.revoke(this.props.share);
-    this.props.ui.showToast('Share link revoked', 'success');
+    this.props.ui.showToast('Share link revoked');
   };
 
   handleCopy = () => {
-    this.props.ui.showToast('Share link copied', 'success');
+    this.props.ui.showToast('Share link copied');
   };
 
   render() {