Fix browser back button

Fixes #17108

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

Author: rullzer

core/js/dist/login.js

@@ -35,4 +35,11 @@ $(document).ready(function () {
 	initCore();
 
 	registerAppsSlideToggle();
-});
+
+	// fallback to hashchange when no history support
+	if (window.history.pushState) {
+		window.onpopstate = _.bind(OC.Util.History._onPopState, OC.Util.History);
+	} else {
+		$(window).on('hashchange', _.bind(OC.Util.History._onPopState, OC.Util.History));
+	}
+})