urls: Move the json/fetch_api_key endpoint to be an API-style route.

zerver/views/auth.py

@@ -731,7 +731,6 @@ def api_get_server_settings(request: HttpRequest) -> HttpResponse:
             result[settings_item] = context[settings_item]
     return json_success(result)
 
-@authenticated_json_post_view
 @has_request_variables
 def json_fetch_api_key(request: HttpRequest, user_profile: UserProfile,
                        password: str=REQ(default='')) -> HttpResponse:

zproject/legacy_urls.py

@@ -16,6 +16,4 @@ legacy_urls = [
     # any more to find out about subscriptions, since they are already
     # pushed to us via the event system.
     url(r'^json/subscriptions/exists$', zerver.views.streams.json_stream_exists),
-
-    url(r'^json/fetch_api_key$', zerver.views.auth.json_fetch_api_key),
 ]

zproject/urls.py

@@ -517,6 +517,12 @@ for incoming_webhook in WEBHOOK_INTEGRATIONS:
 
 urls.append(url(r'^api/v1/external/github', github_dispatcher.api_github_webhook_dispatch))
 
+# Desktop-specific authentication URLs
+urls += [
+    url(r'^json/fetch_api_key$', rest_dispatch,
+        {'POST': 'zerver.views.auth.json_fetch_api_key'}),
+]
+
 # Mobile-specific authentication URLs
 urls += [
     # This json format view used by the mobile apps lists which