Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Upstream added a link to the roadmap, but we have a completely different README.
  Kept ours.
- `app/models/media_attachment.rb`:
  Upstream upped media attachment limits.
  Updated the default according to upstream's.
- `db/migrate/20180831171112_create_bookmarks.rb`:
  Upstream changed the migration compatibility level.
  Did so too.
- `config/initializers/content_security_policy.rb`:
  Upstream refactored this file but we have a different version.
  Kept our version.
- `app/controllers/settings/preferences_controller.rb`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  The file does not directly references individual settings anymore.
  Applied upstream changes.
- `app/lib/user_settings_decorator.rb`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  The file got removed entirely.
  Removed it as well.
- `app/models/user.rb`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  References to individual settings have been removed from the file.
  Removed them as well.
- `app/views/settings/preferences/appearance/show.html.haml`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  Applied upstream's changes and ported ours back.
- `app/views/settings/preferences/notifications/show.html.haml`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  Applied upstream's changes and ported ours back.
- `app/views/settings/preferences/other/show.html.haml`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  Applied upstream's changes and ported ours back.
- `config/settings.yml`:
  Upstream completely refactored user settings storage, and glitch-soc has a
  different set of settings.
  In particular, upstream removed user-specific and unused settings.
  Did the same in glitch-soc.
- `spec/controllers/application_controller_spec.rb`:
  Conflicts due to glitch-soc's theming system.
  Mostly kept our version, as upstream messed up the tests.

1 files changed, 37 insertions, 0 deletions

diff --git a/app/models/user_settings/dsl.rb b/app/models/user_settings/dsl.rb
new file mode 100644
index 000000000..26238bbbe
--- /dev/null
+++ b/app/models/user_settings/dsl.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+module UserSettings::DSL
+  module ClassMethods
+    def setting(key, options = {})
+      @definitions ||= {}
+
+      UserSettings::Setting.new(key, options).tap do |s|
+        @definitions[s.key] = s
+      end
+    end
+
+    def namespace(key, &block)
+      @definitions ||= {}
+
+      UserSettings::Namespace.new(key).configure(&block).tap do |n|
+        @definitions.merge!(n.definitions)
+      end
+    end
+
+    def keys
+      @definitions.keys
+    end
+
+    def definition_for(key)
+      @definitions[key.to_sym]
+    end
+
+    def definition_for?(key)
+      @definitions.key?(key.to_sym)
+    end
+  end
+
+  def self.included(base)
+    base.extend ClassMethods
+  end
+end