Fixes #135

Although I am not sure exactly what's going on, loading the helper in the engine was not the right thing to do

The engine should also be named `monologue`

I am not sure why the helpers under `app/helpers` are not loaded automatically. There is something weird here. Adding them explicitly in `ApplicationHelper` does the trick however

Please check the PR and also if you know why the helpers are not loaded as they should be, please let me know why.. I am really curious