Fixes: U4-3821 Infinite redirect loop when upgrading from 7.0.0 to 7.0.1 and ensures media cache is rebuilt on upgrade

src/Umbraco.Web.UI.Client/src/views/common/authorizeupgrade.controller.js

@@ -0,0 +1,32 @@
+
+/**
+ * @ngdoc controller
+ * @name Umbraco.MainController
+ * @function
+ * 
+ * @description
+ * The controller for the AuthorizeUpgrade login page
+ * 
+ */
+function AuthorizeUpgradeController($scope, $window) {
+    
+    //Add this method to the scope - this method will be called by the login dialog controller when the login is successful
+    // then we'll handle the redirect.
+    $scope.submit = function (event) {
+
+        var qry = $window.location.search.trimStart("?").split("&");
+        var redir = _.find(qry, function(item) {
+            return item.startsWith("redir=");
+        });
+        if (redir) {
+            $window.location = decodeURIComponent(redir.split("=")[1]);
+        }
+        else {
+            $window.location = "/";
+        }
+        
+    };
+
+}
+
+angular.module('umbraco').controller("Umbraco.AuthorizeUpgradeController", AuthorizeUpgradeController);

src/Umbraco.Web.UI.Client/src/views/common/dialogs/login.controller.js

@@ -35,7 +35,7 @@
 
         userService.authenticate(login, password)
             .then(function (data) {               
-                $scope.submit(true);                
+                $scope.submit(true);
             }, function (reason) {
                 $scope.errorMsg = reason.errorMsg;