[API] Create a message queue #9
Merge pull request #9 from tmilos/I-9

[API] Create a message queue #9
[API] List Message Queues #15
Merge pull request #15 from tmilos/I-15

[API] List Message Queues #15
[API] Update Message Queue #16
Merge pull request #16 from tmilos/I-16

[API] Update Message Queue #16
[API] Get info about a message queue #5
Merge pull request #5 from tmilos/I-5

[API] Get info about a message queue #5
refactoring business logic out of controllers
refactoring business logic out of controllers & fixtures & tests