Bug 152828 Add the projectFolder property on module
When user doesn't set the resource folder path in designer, there should be a default working path for Birt to manage the report design and find the related resources. A new property should be added on Module: name: projectFolder type:URL This property only can be given from the open design method from session but should not be set after the module initialized. Concern about the backward compatiblity issue, a new method will be added. Open design with a config argument.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
public ConfigVariable findConfigVariabel( String variableName )
	{
		StructureDefn defn = (StructureDefn) MetaDataDictionary.getInstance( )
				.getStructure( ConfigVariable.CONFIG_VAR_STRUCT );
		return (ConfigVariable) StructureRefUtil.findStructure( this, defn,
				variableName );
	}
	/**
	 * Finds an embedded image by name.
	 * 
	 * @param imageName
	 *            the embedded image name
	 * @return the defined image that matches, or <code>null</code> if the
	 *         image name was not found in the embedded images.
	 */
	public EmbeddedImage findImage( String imageName )
	{
		StructureDefn defn = (StructureDefn) MetaDataDictionary.getInstance( )
				.getStructure( EmbeddedImage.EMBEDDED_IMAGE_STRUCT );
		return (EmbeddedImage) StructureRefUtil.findStructure( this, defn,
				imageName );
	}
	/**
	 * Gets the property definition whose detail type is of the given structure
	 * name.
	 * 
	 * @param structureName
	 *            the structure name to search
	 * @return the property definition whose detail type is of the given
	 *         structure name, otherwise null