Renamed ActionExpression to RulesAction and ConditionExpression to RulesCondition.
Converted all ActionInterface instances to RulesActionInterface.
Merge pull request #50 from klausi/action-context

Covert all ActionInterface instances to RulesActionInterface.
Added a unit test for the 'Node is published' condition.
Refactored 'Node is published' unit test to leverage a mocked annotated class discovery as a proof-of-concept.