Allow unlimited log file size by setting max_file_size to zero and default to it.
Fixed handling of empty values in mapping tables.
Handle --all parameter properly when harvesting MetaLib records.
Fixed MetaLib record normalization to split 653 fields to individual fields.
Allow multiple sources (comma-separated list) in harvest and manage commands.
Added safety check for missing linking id.
Improved leading punctuation handling and article handling of sort titles.
NdlLidoRecord: take only part until slash from the institution field to the building field.
Comments and coding style fixes.
Metadata helper component which allows previewing of normalization on the fly with an ajax call
Helper component that allows previewing normalizations on the fly with an AJAX call