Fixed a bug. Some metadata in the gfs.contextualInformation column was being carried over from parent rows to child rows in gfs_create_arkivum_upload.pl

Fixed a bug in gfs_create_arkivum_upload.pl. Some metadata in the gfs.contextualInformation column was being carried across from parent to child rows because a variable was not being correctly reinitialised

Fixed a bug that occurs when only a subset of the Library Processing column headers is present in the tranche csv file

New script gfs_distribute_arkivum_export_to_tranche.pl and fixed bug in gfs_create_or_delete_tranche_folder_type.pl