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/scenes/Settings/Profile.js

@@ -45,7 +45,7 @@ class Profile extends React.Component<Props> {
       name: this.name,
       avatarUrl: this.avatarUrl,
     });
-    this.props.ui.showToast('Profile saved', 'success');
+    this.props.ui.showToast('Profile saved');
   };
 
   handleNameChange = (ev: SyntheticInputEvent<*>) => {
@@ -58,7 +58,7 @@ class Profile extends React.Component<Props> {
     await this.props.auth.updateUser({
       avatarUrl: this.avatarUrl,
     });
-    this.props.ui.showToast('Profile picture updated', 'success');
+    this.props.ui.showToast('Profile picture updated');
   };
 
   handleAvatarError = (error: ?string) => {