Make displaying application used to toot opt-in (#9897)

* Make storing and displaying application used to toot opt-in

* Revert to storing application info, and display it to the author via API

config/locales/simple_form.en.yml

@@ -33,6 +33,7 @@ en:
         setting_display_media_show_all: Always show media marked as sensitive
         setting_hide_network: Who you follow and who follows you will not be shown on your profile
         setting_noindex: Affects your public profile and status pages
+        setting_show_application: The application you use to toot will be displayed in the detailed view of your toots
         setting_theme: Affects how Mastodon looks when you're logged in from any device.
         username: Your username will be unique on %{domain}
         whole_word: When the keyword or phrase is alphanumeric only, it will only be applied if it matches the whole word
@@ -100,6 +101,7 @@ en:
         setting_hide_network: Hide your network
         setting_noindex: Opt-out of search engine indexing
         setting_reduce_motion: Reduce motion in animations
+        setting_show_application: Disclose application used to send toots
         setting_system_font_ui: Use system's default font
         setting_theme: Site theme
         setting_unfollow_modal: Show confirmation dialog before unfollowing someone

config/settings.yml

@@ -26,6 +26,7 @@ defaults: &defaults
   expand_spoilers: false
   preview_sensitive_media: false
   reduce_motion: false
+  show_application: false
   system_font_ui: false
   noindex: false
   theme: 'default'