reddit scaling: don't fetch replies to posts that link to user's domain

for #1021

reddit.py

@@ -70,7 +70,7 @@ def search_for_links(self):
     url_query = ' OR '.join([f'site:"{u}" OR selftext:"{u}"' for u in urls])
     return self.get_activities(
       search_query=url_query, group_id=gr_source.SEARCH, etag=self.last_activities_etag,
-      fetch_replies=True, fetch_likes=False, fetch_shares=False, count=50)
+      fetch_replies=False, fetch_likes=False, fetch_shares=False, count=50)
 
 class AuthHandler(util.Handler):
   """Base OAuth handler class."""

util.py

@@ -281,6 +281,9 @@ def get_webmention_target(url, resolve=True, replace_test_domains=True):
     logging.info('Dropping bad URL %s.', url)
     return url, None, False
 
+  if domain in ('puzzleadventura.com', 'sweetgamesbox.com'):
+    return url, domain, False
+
   send = True
   if resolve:
     # this follows *all* redirects, until the end