Queue: Defined default queue constants

[therealartz]

No description provided.

[coveralls]

Coverage remained the same at 99.855% when pulling dc07dab on therealartz:master into 2695c1c on amabnl:master.

[DerMika]

I would still like to keep a sample in the docs showing a queue being used by number (e.g. queue 50), so that people know they can either choose one of the default queues by constant or a self-chosen queue by number.

[DerMika]

Do you have a sample now showing the use of a queue constant? I would still like people to be able to look at the docs and find a reference to the default queues. Otherwise most will probably miss it...

[therealartz]

@DerMika I can add simple example

[DerMika]

yes, I would like that. Thanks!

[DerMika]

Thanks again!