Bug 200812 Issue when remove one separator setting in viewer.property[0002]
Description: Issue when remove one separator setting in viewer.property Build number:2.2.1.v200708220927 Steps to reproduce: 1. Deploy birt. 2. Open viewer.properties under WEB-INF folder. 3. Delete "viewer.sep.0=," line 4. Start server. 5. Preview report. 6. Export Data, select columns and select "Comma(,)", click OK. Expected result: Comma(,) isn't in the separator list. Actual result: Nothing happened after step6 and no error logs. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* 
	 * @param request
	 *            http request
	 * @return report page number
	 */
	public static int getPage( HttpServletRequest request )
	{
		int page = getParameterAsInt( request, PARAM_PAGE );
		if ( page > 0 )
			return page;
		String servletPath = request.getServletPath( );
		if ( IBirtConstants.SERVLET_PATH_FRAMESET
				.equalsIgnoreCase( servletPath )
				&& PARAM_FORMAT_HTML.equalsIgnoreCase( getFormat( request ) ) )
		{
			page = 1;
		}
		else
		{
			page = 0;
		}
		return page;
	}
	/**
	 * Get report page range from Http request.
	 * 
	 * @param request
	 *            http request
	 * @return report page range
	 */