[templates] Add download button.
[templates] Fix colspan.
[reports] Implement excel export for report #1.
[export] Fix some rowspan/colspan issues.
[reports] Implement export for all reports.
[export] Fix rowspan problem.
[export] Get all cells in a row (td+th).
[templates] Move report #23 to table format.
[reports] Add missing tags in Report #22 template.
[export] Refactor export to excel function.
[export] Refactor export classes.
[reports] Use decorator for excel export.
[reports] Remove unused variable
Merged excel