fix bug: NoMethodError: undefined method `url_for' for #<Post
fix bug: NoMethodError: undefined method `each' for nil:NilClass:
	/app/views/admin/analytics/_google.html.erb:268;
fix bug: NoMethodError: undefined method `[]' for nil:NilClass:
	/admin/galleries.rb:35;
v1.0.3 - fix bugs;