Add notification level user preference when replying to a topic

config/locales/client.en.yml

@@ -739,6 +739,8 @@ en:
         after_5_minutes: "after 5 minutes"
         after_10_minutes: "after 10 minutes"
 
+      notification_level_when_replying: "When I post in a topic, set that topic to"
+
       invited:
         search: "type to search invites..."
         title: "Invites"

config/locales/server.en.yml

@@ -1373,6 +1373,7 @@ en:
 
     default_other_new_topic_duration_minutes: "Global default condition for which a topic is considered new."
     default_other_auto_track_topics_after_msecs: "Global default time before a topic is automatically tracked."
+    default_other_notification_level_when_replying: "Global default notification level when the user replies to a topic."
     default_other_external_links_in_new_tab: "Open external links in a new tab by default."
     default_other_enable_quoting: "Enable quote reply for highlighted text by default."
     default_other_dynamic_favicon: "Show new/updated topic count on browser icon by default."

config/site_settings.yml

@@ -1247,6 +1247,9 @@ user_preferences:
   default_other_auto_track_topics_after_msecs:
     enum: 'AutoTrackDurationSiteSetting'
     default: 240000
+  default_other_notification_level_when_replying:
+    enum: 'NotificationLevelWhenReplyingSiteSetting'
+    default: 2
   default_other_external_links_in_new_tab: false
   default_other_enable_quoting: true
   default_other_dynamic_favicon: false