Minor fixes in settings/

- Typo
- Removes old comments
- Moves the template debug context processor back to the common file: it
  won't be loaded anyway if `DEBUG=False`.
- Ddt's middleware should be loaded first

cof/settings/dev.py

@@ -12,10 +12,6 @@ EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
 
 DEBUG = True
 
-TEMPLATES[0]["OPTIONS"]["context_processors"] += [
-    'django.template.context_processors.debug'
-]
-
 
 # ---
 # Apache static/media config
@@ -46,7 +42,10 @@ def show_toolbar(request):
     return True
 
 INSTALLED_APPS += ["debug_toolbar"]
-MIDDLEWARE_CLASSES += ["debug_toolbar.middleware.DebugToolbarMiddleware"]
+MIDDLEWARE_CLASSES = (
+    ["debug_toolbar.middleware.DebugToolbarMiddleware"]
+    + MIDDLEWARE_CLASSES
+)
 DEBUG_TOOLBAR_CONFIG = {
     'SHOW_TOOLBAR_CALLBACK': show_toolbar,
 }