Removed problem processing XML.
Removed problem processing XML.

Added logic to rewrite processing config XML to remove pre-selection of
normalization identification method when creating SIPs from the arrange
directory. This is because one method references data which won't exist
because the files haven't actually been ran through the transfer phase
in their current incarnation.

sevein/archivematica,michal-ruzicka/archivematica,eckardm/archivematica,eckardm/archivematica,sevein/archivematica,michal-ruzicka/archivematica,eckardm/archivematica,artefactual/archivematica,sevein/archivematica,artefactual/archivematica,michal-ruzicka/archivematica,artefactual/archivematica,artefactual/archivematica,eckardm/archivematica,michal-ruzicka/archivematica,sevein/archivematica