Added in tests for the new password validation. Fixed old tests that

relied on the old configuration values and old way of validating
passwords. Also improved registration page by always showing error
messages rather than hiding them on leaving the field.

common/test/acceptance/tests/studio/test_studio_course_team.py

@@ -16,7 +16,7 @@ class CourseTeamPageTest(StudioCourseTest):
         user = {
             'username': username,
             'email': username + "@example.com",
-            'password': username + '123'
+            'password': username + '123$%^'
         }
         AutoAuthPage(
             self.browser, no_login=True,