fixes bug 875106 - test for skiplist
Fixes bug 913584 - removing uses of commonconfig at unittest/external/postgresql/*
debugging dsn parameters
change subclasse of test_setupdb
Merge pull request #1479 from GabiThume/bug913584

Fixes bug 913584 - removing uses of commonconfig at unittest/external/postgresql/*
Merge pull request #1531 from GabiThume/bug875106

Fixes bug 875106 - test for skiplist