Version 2.3.5.1

	--index.html
		+ Added "empty fields" error label for the login
	--inf_box-Script.js
		+ renamed two variables (valid -> empty)
		+ validatePassword (Register) does not check that password is
		different than 12345. It did not make sense
		+ validateUsernameLogin and validatePasswordLogin now only check
		for emptyness
		+ validateLogin now checks for emptyness and validity separately
		and shows labels accordingly