Custom Logging Causes Orphaned Variables

The VariableContainer currently does not delete variables if a custom logging service is configured. This should not be the default, and instead should only be the case if the Logging Service is DbLoggingService.

Code in question [VariableContainer]:
if (jbpmContext == null || jbpmContext.getServices().getLoggingService() != null) {

Attached is the patch.