Give the postgresql tests consistent whitespace.
Send the postgresql dialect into test base class.
Add service stack license to postgresql tests project.
Include postgresql tests project in build.
Drop tables so they don't influence other tests.

These tables were detected in the
can_create_tables_after_UseUnicode_or_DefaultStringLenght_changed
test because that test does not specify a search path (schema).

DoesTableExist does not filter by schema unless specified.
Fix filter
Fix table and column names.
Merge pull request #421 from jeffgabhart/issue/pg-tests

Fixes postgresql tests