Exporting to Excel tables using row span breaks the upload format

[Radu Cantor]

When exporting to Excel a table which uses row span, the user only gets one row from the first dimension.

When uploaded directly to the XLS upload widget, Apliqo will take all the rows as empty and keep the value only on the first one.

This must be fixed either on the XLS upload widget or on the export functionality

‌

‌

[Ada Trajer]

Issue added to our backlog