Report templates editor

Two functions have been added to the report templates editor. These are "NOMBREFICHERODOCUMENTO(ind)" and "NUMDOCUMENTOS()". With these, users can list the name of the documents that can be attached to the concepts of the database.

    Returns the name of the attached document, "ind", that the current concept contains.
    The numerical value "ind" must lie between 1 and the value that is returned by the NUMDOCUMENTOS() function.
    Returns the number of attached documents that the current concept contains.