Bug 214204 Only document content in document folder should be removed.[0601]
Description: Only document related content in document folder should be removed. Build number:2.3.0.v20080103 Steps to reproduce: 1. Deploy BIRT. 2. Edit web.xml to set BIRT_VIEWER_DOCUMENT_FOLDER to your local path and there are content inside the path. 3. Start server and click View Example to preview sample report. Expected result: Only content created by viewer should be removed in specified document folder. Actual result: All contents are deleted despite whether they are related with BIRT. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @return
	 */
	public static boolean isShowToolbar( HttpServletRequest request )
	{
		boolean isToolbar = true;
		if ( "false".equalsIgnoreCase( getParameter( request, PARAM_TOOLBAR ) ) ) 
		{
			isToolbar = false;
		}
		return isToolbar;
	}
	/**
	 * Check whether show the navigationbar.
	 * 
	 * @param request
	 * @return
	 */
	public static boolean isShowNavigationbar( HttpServletRequest request )
	{
		boolean isNavigationbar = true;
		if ( "false".equalsIgnoreCase( getParameter( request, PARAM_NAVIGATIONBAR ) ) ) 
		{
			isNavigationbar = false;
		}
		return isNavigationbar;
	}
	/**
	 * Check whether show parameter dialog or not. Default to false.
	 * 
	 * @param request