Bug 151361 default value for reousrce folder user preference
When user does not sepecify the resourec foler user preference, can we make the current project folder (in IDE) or the current report design file's folder (in RCP) as the default value for the resource folder. This way, by default the current project folder is the resource folder where user can create their libs and images. Also please set the default user preference to be null when BIRT is freshly installed.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlugin.java
{
	
	private List ignore = new ArrayList( );
	/**
	 * The Report UI plugin ID.
	 */
	public static final String REPORT_UI = "org.eclipse.birt.report.designer.ui"; 
	/**
	 * The shared instance.
	 */
	private static ReportPlugin plugin;
	/**
	 * The cursor for selecting cells
	 */
	private Cursor cellLeftCursor, cellRightCursor;
	
	public static final String PREFERENCE_DELIMITER = ";"; 
	public static final String SPACE = " "; 
	public static final String DEFAULT_NAME_PREFERENCE = "designer.preview.preference.elementname.defaultname.preferencestore"; 
	public static final String CUSTOM_NAME_PREFERENCE = "designer.preview.preference.elementname.customname.preferencestore"; 
	public static final String DESCRIPTION_PREFERENCE = "designer.preview.preference.elementname.description.preferencestore";