Bug 153378 [Regression]Label text won't show up when the text key is not found
Steps to reproduce: 1.Add a label, set text to "aaa" 2.Add a resource file "a" to the report, add a text key "k1" which is not in the a.properties to the label 3.Preview in Web Viewer Expected result: Label display "aaa" when the text key is not found Actual result: Nothing in preview
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
.equalsIgnoreCase( dataType )
				|| value instanceof Float || value instanceof Double )
		{
			NumberFormatter formatter = new NumberFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( ( (Number) value ).doubleValue( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_DECIMAL
				.equalsIgnoreCase( dataType )
				|| value instanceof BigDecimal )
		{
			NumberFormatter formatter = new NumberFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( ( (BigDecimal) value ).doubleValue( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_INTEGER
				.equalsIgnoreCase( dataType )
				|| value instanceof Integer || value instanceof Long )
		{
			NumberFormatter formatter = new NumberFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( ( (Number) value ).longValue( ) );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_BOOLEAN
				.equalsIgnoreCase( dataType )
				|| value instanceof Boolean )
		{
			if ( ( (Boolean) value ).booleanValue( ) )
			{
				return getMessage( locale,