Se tunea Redmine para tener una página de inicio solo para usuarios anónimos

public/themes/circlepro/javascripts/frontpage/main.js

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+/*
+	Spectral by HTML5 UP
+	html5up.net | @ajlkn
+	Free for personal and commercial use under the CCA 3.0 license (html5up.net/license)
+*/
+
+(function($) {
+
+	var	$window = $(window),
+		$body = $('body'),
+		$wrapper = $('#fp'),
+		$banner = $('#fp-banner'),
+		$header = $('#header');
+
+	// Breakpoints.
+		breakpoints({
+			xlarge:   [ '1281px',  '1680px' ],
+			large:    [ '981px',   '1280px' ],
+			medium:   [ '737px',   '980px'  ],
+			small:    [ '481px',   '736px'  ],
+			xsmall:   [ null,      '480px'  ]
+		});
+
+	// Play initial animations on page load.
+		$window.on('load', function() {
+			window.setTimeout(function() {
+				$body.removeClass('is-preload');
+			}, 100);
+		});
+
+	// Mobile?
+		if (browser.mobile)
+			$body.addClass('is-mobile');
+		else {
+
+			breakpoints.on('>medium', function() {
+				$body.removeClass('is-mobile');
+			});
+
+			breakpoints.on('<=medium', function() {
+				$body.addClass('is-mobile');
+			});
+
+		}
+
+	// Scrolly.
+		$('.scrolly')
+			.scrolly({
+				speed: 1500,
+				offset: $header.outerHeight() + 31
+			});
+
+})(jQuery);