#165 Export problem with paged and grouped lists

[Geron]

When exporting a grouped and sorted table in Word, Excel and PDF, only the current page is exported, and moreover it is exported "as is" (that is data of grouped fields is not repeated in each row).

Things work fine with CSV and XML export (I get the full and detailed list, as expected).

You can reproduce this easily in the example web app:
/displaytag-examples-1.1/example-pse.jsp