additon of custom channel conditional eval, though it desperately needs sanitization and/or a framework to work upon. further optimisations and addition of direct messaging

src/config/app.ts

@@ -15,5 +15,5 @@ module.exports = {
     audience:  'internal',
     algorithm:  ["HS256"]
   },
-  messageTypes : ['broadcast', 'changeChannel']
+  messageTypes : ['broadcast', 'direct', 'changeChannel']
 }