Limit users to 50 lists, remove pagination from lists API (#5933)

config/locales/en.yml

@@ -458,6 +458,9 @@ en:
     title: Invite people
   landing_strip_html: "<strong>%{name}</strong> is a user on %{link_to_root_path}. You can follow them or interact with them if you have an account anywhere in the fediverse."
   landing_strip_signup_html: If you don't, you can <a href="%{sign_up_path}">sign up here</a>.
+  lists:
+    errors:
+      limit: You have reached the maximum amount of lists
   media_attachments:
     validations:
       images_and_video: Cannot attach a video to a status that already contains images
@@ -591,7 +594,7 @@ en:
     open_in_web: Open in web
     over_character_limit: character limit of %{max} exceeded
     pin_errors:
-      limit: Too many toots pinned
+      limit: You have already pinned the maximum number of toots
       ownership: Someone else's toot cannot be pinned
       private: Non-public toot cannot be pinned
       reblog: A boost cannot be pinned