dashboard: preserve path when relogin is required

dashboard/src/authcallback.html

@@ -6,6 +6,11 @@ tmp.forEach(function (pair) {
     if (pair.indexOf('access_token=') === 0) localStorage.token = pair.split('=')[1];
 });
 
-window.location.href = '/';
+var redirectTo = '/';
+if (localStorage.getItem('redirectToHash')) {
+    redirectTo += localStorage.getItem('redirectToHash');
+    localStorage.removeItem('redirectToHash');
+}
+window.location.href = redirectTo;
 
 </script>

dashboard/src/js/client.js

@@ -2742,6 +2742,8 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
     Client.prototype.login = function () {
         this.setToken(null);
 
+        localStorage.setItem('redirectToHash', window.location.hash);
+
         // start oidc flow
         window.location.href = this.apiOrigin + '/openid/auth?client_id=' + ('<%= apiOrigin %>' ? TOKEN_TYPES.ID_DEVELOPMENT : TOKEN_TYPES.ID_WEBADMIN) + '&scope=openid email profile&response_type=code token&redirect_uri=' + window.location.origin + '/authcallback.html';
     };