UX updates to registration form.

- hide optional fields by default.
- instructions only shown when focused in.
- removed header
- Terms of service link and checkbox on same line.

common/test/acceptance/pages/lms/login_and_register.py

@@ -208,7 +208,7 @@ class CombinedLoginAndRegisterPage(PageObject):
 
         """
         # Fill in the form
-        self.wait_for_element_visibility('#register-email', 'Email field is shown')
+        self.wait_for_element_visibility('#register-honor_code', 'Honor code field is shown')
         if email:
             self.q(css="#register-email").fill(email)
         if full_name:
@@ -223,6 +223,8 @@ class CombinedLoginAndRegisterPage(PageObject):
             self.q(css="#register-favorite_movie").fill(favorite_movie)
         if terms_of_service:
             self.q(css="label[for='register-honor_code']").click()
+            self.q(css="#register-honor_code").click()
+            EmptyPromise(lambda: self.q(css='#register-honor_code:checked'), 'Honor code field is checked').fulfill()
 
         # Submit it
         self.q(css=".register-button").click()