#140444 by Agileware: Lineage on a term is lost when term is updated

#209771 by danielnolde: lineage view field: PHP-Warnings if no term associated
#144450 by wall_unit: CREATE TABLE script for PostgreSQL doesn't work.
#216220 by guardian: Install broken on installs with prefixed tables

Cleaned up some of the code, added some comments, tried to improve coding standards.