add logout feature and passed the test

accounts/urls.py

+from django.contrib.auth.views import LogoutView
 from django.contrib.auth.views import logout
 from django.conf.urls import url
 from accounts import views
 
 urlpatterns = [
-    url(r'^send_email$', views.send_login_email, name='send_login_email'),
     url(r'^send_login_email$', views.send_login_email, name='send_login_email'),
     url(r'^login$', views.login, name='login'),
-    url(r'^logout$', logout, {'next_page': '/'}, name='logout'),
+    url(r'^logout$', LogoutView.as_view(next_page='/'), name='logout'),
 ]
\ No newline at end of file

functional_tests/base.py

@@ -23,13 +23,13 @@ class FunctionalTest(StaticLiveServerTestCase):
 
     def createBrowserInstance(self):
         try:
-            # self.browser = webdriver.Chrome(options=self.options)
-            self.browser = webdriver.Firefox()
+            self.browser = webdriver.Chrome(options=self.options)
+            # self.browser = webdriver.Firefox()
         except WebDriverException:
             # linux
-            # self.browser = webdriver.Chrome('./chromedriver',
-            #                                 options=self.options)
-            self.browser = webdriver.Firefox('~/usr/bin/geckodriver')
+            self.browser = webdriver.Chrome('./chromedriver',
+                                            options=self.options)
+            # self.browser = webdriver.Firefox('~/usr/bin/geckodriver')
         self.browser.implicitly_wait(3)