Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
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		{
			string = null; 
		}
		return string;
	}
	/**
	 * Returns the width hint for the given control.
	 * 
	 * @param wHint
	 *            the width hint
	 * @param c
	 *            the control
	 * 
	 * @return the width hint
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	public static int getWidthHint( int wHint, Control c )
	{
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		return wrap ? wHint : SWT.DEFAULT;
	}
	/**
	 * Returns the height hint for the given control.
	 * 
	 * @param hHint
	 *            the width hint
	 * @param c
	 *            the control
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