Allow user to add buy and sell trade transactions for investment accounts (#1066)

* Consolidate modal form structure into partial + helper

* Scaffold out trade transaction form

* Normalize translations

* Add buy and sell trade form with tests

* Move entryable lists to dedicated controllers

* Delegate entry group contents rendering

* More cleanup

* Extract transaction and valuation update logic from entries controller

* Delegate edit and show actions to entryables

* Trade builder

* Update paths for transaction updates

test/application_system_test_case.rb

@@ -3,6 +3,9 @@ require "test_helper"
 class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
   setup do
     Capybara.default_max_wait_time = 5
+
+    # Prevent "auto sync" from running when tests execute enqueued jobs
+    families(:dylan_family).update! last_synced_at: Time.now
   end
 
   driven_by :selenium, using: ENV["CI"].present? ? :headless_chrome : :chrome, screen_size: [ 1400, 1400 ]