Using shared images for tutorial elements.

org.fortiss.tooling.kernel.ui/trunk/icons/tutorial.gif

org.fortiss.tooling.kernel.ui/trunk/icons/tutorial.png

org.fortiss.tooling.kernel.ui/trunk/icons/tutorial_todo.gif

org.fortiss.tooling.kernel.ui/trunk/icons/tutorial_todo.png

...runk/src/org/fortiss/tooling/kernel/ui/ESharedImages.java

...g/fortiss/tooling/kernel/ui/ToolingKernelUIActivator.java

...fortiss/tooling/kernel/ui/internal/TutorialUIService.java

...oling/kernel/ui/internal/editor/TutorialStepUIEditor.java

...entation/TutorialDefinitionModelElementLabelProvider.java