chore: Reorganize the installation config settings (#8794)

- Reorganizing installation config settings to move more configurations into UI from environment variables
- Changes to installation config to support premium plans in the enterprise edition
- Fixes the broken premium indicator in account/show and accounts/edit page

spec/controllers/super_admin/app_config_controller_spec.rb

@@ -16,9 +16,9 @@ RSpec.describe 'Super Admin Application Config API', type: :request do
 
       it 'shows the app_config page' do
         sign_in(super_admin, scope: :super_admin)
-        get '/super_admin/app_config'
+        get '/super_admin/app_config?config=facebook'
         expect(response).to have_http_status(:success)
-        expect(response.body).to include(config.name)
+        expect(response.body).to include(config.value)
       end
     end
   end
@@ -34,7 +34,7 @@ RSpec.describe 'Super Admin Application Config API', type: :request do
     context 'when it is an aunthenticated super admin' do
       it 'shows the app_config page' do
         sign_in(super_admin, scope: :super_admin)
-        post '/super_admin/app_config', params: { app_config: { FB_APP_ID: 'FB_APP_ID' } }
+        post '/super_admin/app_config?config=facebook', params: { app_config: { FB_APP_ID: 'FB_APP_ID' } }
 
         expect(response).to have_http_status(:found)
         expect(response).to redirect_to(super_admin_settings_path)