Updated Preferences dialog and added test cases for wnettools

tests/__init__.py

@@ -0,0 +1,9 @@
+
+def run_tests():
+    import unittest
+    test_suite = unittest.TestSuite()
+
+    import testwnettools
+    test_suite.addTest(testwnettools.suite())
+
+    unittest.TextTestRunner(verbosity=5).run(test_suite)