make "rake unittest_backend" not ask for password if it is "storktest"
rake unittest_backend asks for your Postgres password several times even though it is
storktest. So I have to run
rake unittest_backend PGPASSWORD=storktest. Developer's Guide seems to allude to the fact that this should not be necessary:
Similarly, if the database setup requires a password other than the default storktest, the PGPASSWORD variable can be used by issuing the following command: $ rake unittest_backend PGPASSWORD=secret123