Formalized str() method of BibRecDocs, BibDoc, BibDocFile. Fixed sorting of 8564 rows in MARC produced by BibUpload. Added revert method to bibdoc, in order to revert to old revision. Fixed deleting bibdoc, by renaming to DELETED-datetime-docname, so that creating a bibdoc called docname is then possible. Fixed undelete to work with new delete algorithm Fixed websubmit file-non-existing error-box which was raising an exception. Added $v e REVERT command to FFT in order to exploit revert method of bibdoc. Added regression test for testing --replace, REVERT and str