Sticky Comments: Hide scores for non-mods

In this thread:

https://www.reddit.com/r/ideasfortheadmins/comments/400on6/remove_karma_display_from_stickied_comments/cyr6ztt?context=5

/u/TheMentalist10 and others convinced me that it's reasonable
to hide scores for non-mods. Mods still get the signal of how
their comment is being perceived but users are less susceptible to
bandwagoning. That seems like a reasonable middle ground for me,
so I think this is worth doing.

r2/r2/models/link.py

@@ -1709,7 +1709,7 @@ class Comment(Thing, Printable):
             hide_period = ('{0} minutes'
                           .format(item.subreddit.comment_score_hide_mins))
 
-            if item.link.contest_mode:
+            if item.is_sticky or item.link.contest_mode:
                 item.score_hidden = True
             elif item._date > timeago(hide_period):
                 item.score_hidden = not item.is_author