Added first tutorial for data dictionary.

org.fortiss.tooling.kernel/trunk/model/kernel.ecore

org.fortiss.tooling.kernel/trunk/model/kernel.genmodel

...g/fortiss/tooling/kernel/extension/ITutorialProvider.java

.../tooling/kernel/extension/ITutorialWhitelistProvider.java

...g/fortiss/tooling/kernel/extension/data/TutorialStep.java

.../org/fortiss/tooling/kernel/internal/TutorialService.java

.../org/fortiss/tooling/kernel/service/ITutorialService.java

...iss/tooling/kernel/utils/TutorialModelElementFactory.java