fixed predicate editing bug in scheduler wizards + some refactoring

de.bmotionstudio.gef.editor/.project

...dio.gef.editor/.settings/org.eclipse.core.resources.prefs

...tudio.gef.editor/.settings/org.eclipse.core.runtime.prefs

...c/de/bmotionstudio/gef/editor/AppContextMenuProvider.java

...r/src/de/bmotionstudio/gef/editor/AttributeConstants.java

.../de/bmotionstudio/gef/editor/BControlCreationFactory.java

...rc/de/bmotionstudio/gef/editor/BMotionAbstractWizard.java

.../src/de/bmotionstudio/gef/editor/BMotionEditorPlugin.java

.../de/bmotionstudio/gef/editor/BMotionStudioEditorPage.java

...r/src/de/bmotionstudio/gef/editor/BMotionStudioImage.java

...editor/src/de/bmotionstudio/gef/editor/BindingObject.java

...src/de/bmotionstudio/gef/editor/EditorPaletteFactory.java

...ditor/src/de/bmotionstudio/gef/editor/InstallActions.java

...f.editor/src/de/bmotionstudio/gef/editor/InstallMenu.java

...studio/gef/editor/action/BMotionAbstractWizardDialog.java

...studio/gef/editor/action/BMotionObserverWizardDialog.java

.../gef/editor/action/BMotionSchedulerEventWizardDialog.java

...nstudio/gef/editor/action/BMotionWizardAddItemAction.java

...dio/gef/editor/action/BMotionWizardDeleteItemsAction.java

.../bmotionstudio/gef/editor/action/BringToBottomAction.java