Fix so no download links are available for non-PDF files
Fix so no download links are available for non-PDF files

karger/nbproject,karger/nbproject,dragon96/nbproject,nbproject/nbproject,karger/nbproject,kesiena115/nbproject,kesiena115/nbproject,kesiena115/nbproject,kesiena115/nbproject,kesiena115/nbproject,Lsquared13/nbproject,Lsquared13/nbproject,Lsquared13/nbproject,dragon96/nbproject,karger/nbproject,nbproject/nbproject,Lsquared13/nbproject,Lsquared13/nbproject,dragon96/nbproject,nbproject/nbproject,dragon96/nbproject,karger/nbproject,nbproject/nbproject,dragon96/nbproject,nbproject/nbproject