#11 Rework reporting framework and provide more report formats

[Andreas Mangold]

Now, only reports in HTML format can be generated. This is nice for looking at the reports and navigating in them, but there is no printable report for archving purposes etc.. At least RTF and PDF formats should be generated.

Also, rendering of HTML pages is now being done via PUT statements, which is fine for maximum control over generation, but not portable and hardly usable for other report formats. Using SAS ODS for report formatting could help here, but it has to be figured out whether the more complex parts of the reports (e.g. navigation to the left) can be transfered to ODS.

This should first be analysed. Before any programming on that should be done, ticket [bugs:#10] should first be finished as it affects also the reporting maros.

[Andreas Mangold]

Milestone is now v2.0. When planning v2.0 in more detail, other unplanned tickets where component is "Reporting" should also be considered.