add "Approve new topics unless user level" setting

config/locales/server.en.yml

@@ -1353,6 +1353,7 @@ en:
 
     approve_post_count: "The amount of posts from a new or basic user that must be approved"
     approve_unless_trust_level: "Posts for users below this trust level must be approved"
+    approve_new_topics_unless_trust_level: "New topics for users below this trust level must be approved"
     notify_about_queued_posts_after: "If there are posts that have been waiting to be reviewed for more than this many hours, an email will be sent to the contact_email. Set to 0 to disable these emails."
     auto_close_messages_post_count: "Maximum number of posts allowed in a message before it is automatically closed (0 to disable)"
     auto_close_topics_post_count: "Maximum number of posts allowed in a topic before it is automatically closed (0 to disable)"

config/site_settings.yml

@@ -544,6 +544,9 @@ posting:
   approve_unless_trust_level:
     default: 0
     enum: 'TrustLevelSetting'
+  approve_new_topics_unless_trust_level:
+    default: 0
+    enum: 'TrustLevelSetting'
   notify_about_queued_posts_after:
     default: 24
     min: 0

lib/new_post_manager.rb

@@ -73,6 +73,7 @@ class NewPostManager
 
     (user.trust_level <= TrustLevel.levels[:basic] && user.post_count < SiteSetting.approve_post_count) ||
     (user.trust_level < SiteSetting.approve_unless_trust_level.to_i) ||
+    (manager.args[:title].present? && user.trust_level < SiteSetting.approve_new_topics_unless_trust_level.to_i) ||
     is_fast_typer?(manager) ||
     matches_auto_block_regex?(manager)
   end