Bug 128425 [Help] Help button should not show up in dialogs without help context ID
I20060216-2000 The Help button should not show up in dialogs without help context ID. Examples in this build are the 'Source > Clean Up...' wizard or 'plugin context menu > PDE Tools > Organize Manifests...'.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TrayDialog.java
/*
	 * The separator to the right of the sash.
	 */
	private Label rightSeparator;
	
	/*
	 * The sash that allows the user to resize the tray.
	 */
	private Sash sash;
	
	/*
	 * Whether or not help is available for this dialog.
	 */
	private boolean helpAvailable;
	/**
	 * Creates a tray dialog instance. Note that the window will have no visual
	 * representation (no widgets) until it is told to open.
	 * 
	 * @param shell the parent shell, or <code>null</code> to create a top-level shell
	 */
	protected TrayDialog(Shell shell) {
		super(shell);
	}
	
	/**
	 * Creates a tray dialog with the given parent.
	 * 
	 * @param parentShell the object that returns the current parent shell
	 */
	protected TrayDialog(IShellProvider parentShell) {