Add JSON response format to entropy endpoints (#2673)

* Add JSON response format to entropy endpoints

Add account settings JSON endpoint returning account info including auto_postpone_period. Add auto_postpone_period to board JSON responses. Add JSON update support to both account and board entropy controllers.

* Add auto_postpone_period to all board response examples in API docs

* Use auto_postpone_period_in_days in JSON responses and API docs

* Use valid period values in permission tests

app/controllers/account/entropies_controller.rb

@@ -4,11 +4,12 @@ class Account::EntropiesController < ApplicationController
   before_action :ensure_admin
 
   def update
-    Current.account.entropy.update!(entropy_params)
+    @account = Current.account
+    @account.entropy.update!(entropy_params)
 
     respond_to do |format|
       format.html { redirect_to account_settings_path, notice: "Account updated" }
-      format.json { head :no_content }
+      format.json { render "account/settings/show", status: :ok }
     end
   rescue ActiveRecord::RecordInvalid
     head :unprocessable_entity

app/controllers/account/settings_controller.rb

@@ -5,7 +5,10 @@ class Account::SettingsController < ApplicationController
   before_action :set_account
 
   def show
-    @users = @account.users.active.alphabetically.includes(:identity)
+    respond_to do |format|
+      format.html { @users = @account.users.active.alphabetically.includes(:identity) }
+      format.json
+    end
   end
 
   def update

app/controllers/boards/entropies_controller.rb

@@ -10,7 +10,7 @@ class Boards::EntropiesController < ApplicationController
 
     respond_to do |format|
       format.turbo_stream
-      format.json { head :no_content }
+      format.json { render "boards/show", status: :ok }
     end
   rescue ActiveRecord::RecordInvalid
     head :unprocessable_entity