Move NewBlog to built_in_modules and delete "vendor/templates"

vendor/built_in_modules/NewBlog/test/integration/navigation_test.rb

@@ -0,0 +1,10 @@
+require 'test_helper'
+
+class NavigationTest < ActionDispatch::IntegrationTest
+  fixtures :all
+
+  # test "the truth" do
+  #   assert true
+  # end
+end
+