Changed actions to beans
SpringAtom - #91

Reports are now generated using JasperReportUtils (from Spring)
SpringAtom - #92

ReportRepresentation.java is a bean (out of the Spring's context) that loads all available representations (by checking if subclasses of AbstractJasperReportView are available):
for CSV it is JasperReportsCsvView
for HTML it is JasperReportsHtmlView
for PDF it is JasperReportsPdfView
for EXCEL it is JasperReportsXlsView