MarcRecord: Moved some of the toSolrArray code into sub-methods to allow easier overriding and avoid duplicate work during record handling.
[ALLI-2424] NdlMarcRecord: Add an option to index project codes from field 960.
[ALLI-2713] NdlMarcRecord: Added indexing of place of publication.
[ALLI-2365] NdlMarcRecord: Added more fields to topic facets.
[ALLI-2211] NdlMarcRecord: Added auxiliary subdivision to UDK classifications.
[ALLI-1633] NdlMarcRecord: Added indexing of ISMN.