Manual Normalization: normalization.csv uses pre-sanitized path

refs #4922

Before parsing the normalization.csv, fetch the unsanitized name from the
database and match on that to disambiguate between files with the same
name. Do not force lowercase before matching. Catch multiple exceptions
properly.
createMETS: Remove fileSec sorting

Sorting caused problems when dealing with non-Unicode filenames, and is
unnecessary for the METS. Removed sorting and PyICU dependency. Moved
fileSec creation to one loop, instead of generating separate ones for files
and directories, as they no longer need to be custom sorted.