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/helpers/entries_helper.rb

@@ -0,0 +1,40 @@
+module EntriesHelper
+  def entries_by_date(entries, totals: false)
+    transfer_groups = entries.group_by do |entry|
+      # Only check for transfer if it's a transaction
+      next nil unless entry.entryable_type == "Transaction"
+      entry.entryable.transfer&.id
+    end
+
+    # For a more intuitive UX, we do not want to show the same transfer twice in the list
+    deduped_entries = transfer_groups.flat_map do |transfer_id, grouped_entries|
+      if transfer_id.nil? || grouped_entries.size == 1
+        grouped_entries
+      else
+        grouped_entries.reject do |e|
+          e.entryable_type == "Transaction" &&
+          e.entryable.transfer_as_inflow.present?
+        end
+      end
+    end
+
+    deduped_entries.group_by(&:date).sort.reverse_each.map do |date, grouped_entries|
+      content = capture do
+        yield grouped_entries
+      end
+
+      next if content.blank?
+
+      render partial: "entries/entry_group", locals: { date:, entries: grouped_entries, content:, totals: }
+    end.compact.join.html_safe
+  end
+
+  def entry_name_detailed(entry)
+    [
+      entry.date,
+      format_money(entry.amount_money),
+      entry.account.name,
+      entry.display_name
+    ].join(" • ")
+  end
+end