More refactoring stuff

- Add a waitForEventQueue promise, to get rid of the 5 second fudge from testBot.js
- Async'ify testBot.js
- Complete plumbing for Hint's ScriptDialog support (see changes to ScriptDialogEvent.ts and Comms.ts
- Fix: The EventQueue was pausing for 5 seconds every 30 seconds

lib/events/EventQueueStateChangeEvent.ts

@@ -0,0 +1,4 @@
+export class EventQueueStateChangeEvent
+{
+    active: boolean;
+}