Switch audio/video devices while in call

Enable the menus to switch audio/video devices.
Add connectionstatechange webRTCConnection listener to set the connected
status.

GitLab: #146
Change-Id: Ic3afbdee2b1a6bf312d3d7d902adb3c103a7d26f
diff --git a/client/src/managers/NotificationManager.tsx b/client/src/managers/NotificationManager.tsx
index c515320..63eccc6 100644
--- a/client/src/managers/NotificationManager.tsx
+++ b/client/src/managers/NotificationManager.tsx
@@ -25,7 +25,7 @@
 import { WithChildren } from '../utils/utils';
 
 /**
- * Binds notification listeners to the WebSocket from a WebSocketContext
+ * Binds notification listeners to the WebSocket from a WebSocketContext.
  */
 export default ({ children }: WithChildren) => {
   const webSocket = useContext(WebSocketContext);