#23 Dynamic table without columns

[didoudeux]

The designer does not manage dynamic tables without
columns.
It automatically adds one column named ColumnName.

But if we need to add a datasource and let daReport
automatically add the columns it goes wrong because of
that column :
- first it never exists in the datasource
- second it makes the test "if
(styledTable.Columns.Length == 0)" fail so the
datasource columns are not automatically added