Deprecate WorkflowState#getName()
Use null safe equals check in AbstractWorkflowDefinition#getState()
deprecate State.name in rest api. Fix javadocs.
Disable H2 tcp and console ports in unit tests.

Prevents port collisions with parallel test runs.
Merge pull request #36 from NitorCreations/deprecate-get-name

Deprecate WorkflowState#getName()
Add executor_id to table nflow_workflow_action.

WorkflowInstanceDao fetches nflow_workflow.executor_id to WorkflowInstance and
nflow_workflow_action.executor_id to WorkflowInstanceAction.