* adding warning when user doesn't enter an emailadres
 * using type=email fields instead of type=text
 * adding mention of logging in with emailadres in error message
 * using alert-style for incorrect emailaddress warning
 * removing messages_nl in favor of gettext()
 * removing minified files (we compress anyway)
Merge branch 'bb-1153-email-login-warning' of https://github.com/maykinmedia/bluebottle into maykin-1153

Conflicts:
	static/global/js/app.js
	static/global/js/vendor/jquery-validation/jquery.validate.js
	templates/base.html
Merge pull request #679 from gannetson/maykin-1153

Maykin 1153