Bug 202474 [Forms] Create a resource manager to share the bold font
If a FormToolkit is passed into FormEditor it is disposed upon disposal of the editor even though it may be shared.
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/widgets/FormText.java
* selected or the text cannot be copied for any other reason.
	 * 
	 * @since 3.1
	 */
	public void copy() {
		if (!canCopy())
			return;
		Clipboard clipboard = new Clipboard(getDisplay());
		Object[] o = new Object[] { getSelectionText() };
		Transfer[] t = new Transfer[] { TextTransfer.getInstance() };
		clipboard.setContents(o, t);
		clipboard.dispose();
	}
	/**
	 * Returns the reference of the hyperlink that currently has keyboard focus,
	 * or <code>null</code> if there are no hyperlinks in the receiver or no
	 * hyperlink has focus at the moment.
	 * 
	 * @return href of the selected hyperlink or <code>null</code> if none
	 *         selected.
	 * @since 3.1
	 */
	public Object getSelectedLinkHref() {
		IHyperlinkSegment link = getSelectedLink();
		return link != null ? link.getHref() : null;
	}
	/**
	 * Returns the text of the hyperlink that currently has keyboard focus, or
	 * <code>null</code> if there are no hyperlinks in the receiver or no
	 * hyperlink has focus at the moment.