Add customizable menu order for user accounts (#44)

* Add customizable menu order for user accounts

Introduces a MenuOrder model and concern to allow users to select their preferred account ordering (by name or balance, ascending or descending). Adds a default_order field to users, updates user preferences UI, and applies the selected order to balance sheet account listings.

* Rename MenuOrder to AccountOrder and update user order field

Refactors the MenuOrder model to AccountOrder and updates all references accordingly. Replaces the user's default_order field with default_account_order, including migration changes, validations, and form fields. Updates localization and schema to reflect the new naming.

* Update balance_sheet.rb

* Fix for nil Current.user when rake runs in balance_sheet model

---------

Signed-off-by: Aluisio Pereira <oaluiser@gmail.com>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

app/controllers/concerns/orderable.rb

@@ -0,0 +1,14 @@
+module Orderable
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :set_order
+  end
+
+  private
+    def set_order
+      @order = AccountOrder.find(params[:order] || Current.user&.default_account_order)
+    rescue ArgumentError
+      @order = AccountOrder.default
+    end
+end