Replace best_in_place editor on admin settings page (#2789)

* Remove best_in_place

* Replace best_in_place usage with rails helpers

* Move admin/settings#index to #edit action

* Remove click_to__edit from i18n

spec/controllers/admin/settings_controller_spec.rb

@@ -1,51 +1,65 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe Admin::SettingsController, type: :controller do
   render_views
 
+  before do
+    Rails.cache.clear
+  end
+
   describe 'When signed in as an admin' do
     before do
       sign_in Fabricate(:user, admin: true), scope: :user
     end
 
-    describe 'GET #index' do
+    describe 'GET #edit' do
       it 'returns http success' do
-        get :index
+        get :edit
 
         expect(response).to have_http_status(:success)
       end
     end
 
     describe 'PUT #update' do
-
       describe 'for a record that doesnt exist' do
         after do
           Setting.new_setting_key = nil
         end
 
-        it 'creates a settings value that didnt exist before' do
+        it 'cannot create a setting value for a non-admin key' do
           expect(Setting.new_setting_key).to be_nil
 
-          patch :update, params: { id: 'new_setting_key', setting: { value: 'New key value' } }
+          patch :update, params: { new_setting_key: 'New key value' }
 
-          expect(response).to redirect_to(admin_settings_path)
-          expect(Setting.new_setting_key).to eq 'New key value'
+          expect(response).to redirect_to(edit_admin_settings_path)
+          expect(Setting.new_setting_key).to be_nil
+        end
+
+        it 'creates a settings value that didnt exist before for eligible key' do
+          expect(Setting.site_extended_description).to be_blank
+
+          patch :update, params: { site_extended_description: 'New key value' }
+
+          expect(response).to redirect_to(edit_admin_settings_path)
+          expect(Setting.site_extended_description).to eq 'New key value'
         end
       end
 
       it 'updates a settings value' do
         Setting.site_title = 'Original'
-        patch :update, params: { id: 'site_title', setting: { value: 'New title' } }
+        patch :update, params: { site_title: 'New title' }
 
-        expect(response).to redirect_to(admin_settings_path)
+        expect(response).to redirect_to(edit_admin_settings_path)
         expect(Setting.site_title).to eq 'New title'
       end
 
       it 'typecasts open_registrations to boolean' do
         Setting.open_registrations = false
-        patch :update, params: { id: 'open_registrations', setting: { value: 'true' } }
+        patch :update, params: { open_registrations: 'true' }
 
-        expect(response).to redirect_to(admin_settings_path)
+        expect(response).to redirect_to(edit_admin_settings_path)
         expect(Setting.open_registrations).to eq true
       end
     end