PRD-5268 - Reports with pagebreaks did not generate sheetnames and extra sheets correctly.

(1) Sheetnames were not computed if the name was defined on the root band itself.
(2) Sheetnames were not applied if any other empty band exists before this section
(3) Subsequent sheets had their content offset by the previous bands filled rows.
Merge pull request #530 from tmorgner/PRD-5268

PRD-5268 - Reports with pagebreaks did not generate sheetnames and extra...