Account:: namespace simplifications and cleanup (#2110)

* Flatten Holding model

* Flatten balance model

* Entries domain renames

* Fix valuations reference

* Fix trades stream

* Fix brakeman warnings

* Fix tests

* Replace existing entryable type references in DB

app/controllers/concerns/stream_extensions.rb

@@ -0,0 +1,20 @@
+module StreamExtensions
+  extend ActiveSupport::Concern
+
+  def stream_redirect_to(path, notice: nil, alert: nil)
+    custom_stream_redirect(path, notice: notice, alert: alert)
+  end
+
+  def stream_redirect_back_or_to(path, notice: nil, alert: nil)
+    custom_stream_redirect(path, redirect_back: true, notice: notice, alert: alert)
+  end
+
+  private
+    def custom_stream_redirect(path, redirect_back: false, notice: nil, alert: nil)
+      flash[:notice] = notice if notice.present?
+      flash[:alert] = alert if alert.present?
+
+      redirect_target_url = redirect_back ? request.referer : path
+      render turbo_stream: turbo_stream.action(:redirect, redirect_target_url)
+    end
+end