Adding unit tests for RabbitMQ Dao
Fixing the widget interface, adding colors etc.
Merge pull request #26 from domeq/rabbitmq-unit-tests-fixes

Rabbitmq unit tests fixes
Adding the support for displaying number of messages in RabbitMQ queues in graph widget
Fixing unit tests for RabbitMQ Dao
Merge pull request #27 from domeq/rabbitmq-queue-graphs

Adding the support for displaying number of messages in RabbitMQ queues ...