Revert window.close usage

static/js/main.js

@@ -69,12 +69,11 @@ var app = new Vue({
     },
     methods: {
         "exit": function() {
-            /*ajax("/api/exit", function() {}, function(msg) {
+            ajax("/api/exit", function() {}, function(msg) {
                 alert("LiftInstall encountered and error while exiting: " + msg
                     + "\nPlease upload the log file (in the same directory as the installer) to " +
                     "the respective maintainers for this application (where you got it from!)");
-            });*/
-            window.close();
+            });
         }
     }
 }).$mount("#app");