Bug 163241 [Undo] Allow Undo notification to be turned off
When deleting a project you will always been notified that it removes the Undo History. Could we add a "Don't show this" checkbox to its dialog settings? Thanx, PW
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/DeleteResourceAction.java
static class DeleteProjectDialog extends MessageDialog {
		private IResource[] projects;
		private boolean deleteContent = false;
		/**
		 * Control testing mode. In testing mode, it returns true to delete
		 * contents and does not pop up the dialog.
		 */
		private boolean fIsTesting = false;
		private Button radio1;
		private Button radio2;
		DeleteProjectDialog(Shell parentShell, IResource[] projects) {
			super(parentShell, getTitle(projects), null,