Treat null origins as "Various".
Ensure PSQ views return special PSR names when available.

E.g. "Serbia (and Kosovo: S/RES/1244 (1999))" rather than just Serbia.
Implement new method of adapting the context name to each individual schema.

Hard-code the context name into the DDL rather than calling a function to return
it, but generate the hard-coded literal in SQL*Plus, at the beginning of the
Schema.sql script.

Remove comments from Schema.sql file to acknowledge that it is henceforth a
manually maintained file rather than being generated from Data Modeler.