Drop foot after a stroke is just one of the many possible conditions that can occur. It can be helped, but not always cured. Adjustments in life style are tough, especially at older ages and much support is needed from loved ones.
AngularJS ng-cloak Directive. The ng-cloak directive in angularjs is a special type of directive which is used to prevent showing un-compiled form elements while page loading. We can say that ng-cloak directive will hold and wait till operations complete to show elements on page.
As others have said, nginx is a web server, like Apache. It can be used, same as Apache, to serve websites. You could see that message if you just happened to be trying to visit a lot of nonexistent pages at websites that happened to be using nginx, but that seems a bit unlikely, as Apache is a lot more common.