Fixing missed $this->db->query()
Fixing some missed $this->_db usage.
Putting $_pdo in the right place.
Manually updating versions.
Rename DbSystem vars to dbSystem
Add TPG functions to groups, modify existing code to use them.
Remove old TPG methods from DB.
Merge branch 'dev-tpg-refactoring' into dev
Merge dev-tpg-refactoring into dev.
Merge pull request #22 from nZEDb/dev

Dev