Fixed an issue with redirect type not being properly set

If a redirect was created from the global dashboard, the type/mode would always be set to "content", which obviously is wrong. The redirects would still work fine, but eg. a redirect for a media (created via the dashboard), wouldn't show up in the redirects proeprty editor of said media due to the wrong type being stored in the database.

src/Skybrud.Umbraco.Redirects/App_Plugins/Skybrud.Umbraco.Redirects/Scripts/Controllers/AddRedirectDialog.js

@@ -90,7 +90,7 @@
         var params = {
             rootNodeId: $scope.redirect.rootNodeId,
             url: $scope.redirect.url,
-            linkMode: $scope.type,
+            linkMode: $scope.redirect.link.mode,
             linkId: $scope.redirect.link.id,
             linkUrl: $scope.redirect.link.url,
             linkName: $scope.redirect.link.name