Removed column headers in the Excel format, since it is not flexible enough to create formats with a different number of columns. To be moved later to bibformat_templates.py if needed.
Removed column headers in the Excel format, since it is not flexible enough to create formats with a different number of columns.
To be moved later to bibformat_templates.py if needed.

tiborsimko/invenio,tiborsimko/invenio,inveniosoftware/invenio,inveniosoftware/invenio