Enhancement : Miscellaneous improvements to the RDB Schema Editor sample

Removed PartOfPrimaryKey property from the columns table on the form
editor page. Now that this property is derived, showing it there does
not make a lot of sense.
Fix : NPE in FormComponentPresentation.layout()

java.lang.NullPointerException
	at org.eclipse.sapphire.ui.forms.swt.FormComponentPresentation.layout(FormComponentPresentation.java:135)
	at org.eclipse.sapphire.ui.forms.swt.internal.RadioButtonGroupBinding.createMalformedItem(RadioButtonGroupBinding.java:118)
	at org.eclipse.sapphire.ui.forms.swt.internal.RadioButtonGroupBinding.doUpdateTarget(RadioButtonGroupBinding.java:180)
	at org.eclipse.sapphire.ui.forms.swt.AbstractBinding.updateTarget(AbstractBinding.java:148)
	at org.eclipse.sapphire.ui.forms.swt.AbstractBinding.<init>(AbstractBinding.java:69)
	at org.eclipse.sapphire.ui.forms.swt.internal.RadioButtonGroupBinding.<init>(RadioButtonGroupBinding.java:58)
	at org.eclipse.sapphire.ui.forms.swt.internal.RadioButtonGroupPropertyEditorPresentation.createContents(RadioButtonGroupPropertyEditorPresentation.java:88)
	at org.eclipse.sapphire.ui.forms.swt.PropertyEditorPresentation.render(PropertyEditorPresentation.java:164)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.renderChildren(CompositePresentation.java:209)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.refresh(CompositePresentation.java:235)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.render(CompositePresentation.java:167)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.render(CompositePresentation.java:88)
	at org.eclipse.sapphire.ui.forms.swt.internal.FormPresentation.render(FormPresentation.java:58)
	at org.eclipse.sapphire.ui.forms.swt.internal.TabGroupPresentation.render(TabGroupPresentation.java:126)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.renderChildren(CompositePresentation.java:209)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.refresh(CompositePresentation.java:235)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.render(CompositePresentation.java:167)
	at org.eclipse.sapphire.ui.forms.swt.internal.CompositePresentation.render(CompositePresentation.java:88)
	at org.eclipse.sapphire.ui.forms.swt.SapphireForm.<init>(SapphireForm.java:64)
	at oracle.eclipse.tools.coherence.ui.launchConfig.CoherenceLaunchConfigurationTabGroup$CoherenceLaunchConfigurationTab.createControl(CoherenceLaunchConfigurationTabGroup.java:121)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.showInstanceTabsFor(LaunchConfigurationTabGroupViewer.java:817)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.displayInstanceTabs(LaunchConfigurationTabGroupViewer.java:748)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer$8.run(LaunchConfigurationTabGroupViewer.java:635)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.inputChanged(LaunchConfigurationTabGroupViewer.java:652)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.setInput0(LaunchConfigurationTabGroupViewer.java:613)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.setInput(LaunchConfigurationTabGroupViewer.java:588)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.handleLaunchConfigurationSelectionChanged(LaunchConfigurationsDialog.java:960)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog$3.selectionChanged(LaunchConfigurationsDialog.java:573)
	at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:876)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
	at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:873)
	at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1217)
	at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1243)
	at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
	at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259)
	at org.eclipse.jface.util.OpenStrategy$1$2.run(OpenStrategy.java:440)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:832)
	at org.eclipse.jface.window.Window.open(Window.java:808)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.open(LaunchConfigurationsDialog.java:1154)
	at org.eclipse.debug.ui.DebugUITools$2.run(DebugUITools.java:611)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationDialogOnGroup(DebugUITools.java:619)
	at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationDialogOnGroup(DebugUITools.java:552)
	at org.eclipse.debug.ui.actions.OpenLaunchDialogAction.run(OpenLaunchDialogAction.java:82)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:519)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1438)

Bugzilla: https://bugs.eclipse.org/bugs/show_bug.cgi?id=449989