More composable forms (#989)

* Make forms more composable, opt-in to form builder

* Remove unused method

* Simpler money input controls

* Add in new form styling to imports

* Lint fixes

* Small tweak of multi select styles

app/controllers/accounts_controller.rb

@@ -19,6 +19,7 @@ class AccountsController < ApplicationController
   end
 
   def list
+    render layout: false
   end
 
   def new

app/controllers/application_controller.rb

@@ -2,8 +2,6 @@ class ApplicationController < ActionController::Base
   include Authentication, Invitable, SelfHostable
   include Pagy::Backend
 
-  default_form_builder ApplicationFormBuilder
-
   # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
   allow_browser versions: :modern
 end

app/controllers/currencies_controller.rb

@@ -1,6 +1,6 @@
 class CurrenciesController < ApplicationController
   def show
-    @currency = Money::Currency.all_instances.find { |currency| currency.iso_code == params[:id] }
-    render json: { step: @currency.step, placeholder: Money.new(0, @currency).format }
+    currency = Money::Currency.all_instances.find { |currency| currency.iso_code == params[:id] }
+    render json: currency.as_json.merge({ step: currency.step })
   end
 end