Improve app overview and add restart action

src/js/client.js

@@ -500,6 +500,29 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
         });
     };
 
+    Client.prototype.restartApp = function (id, callback) {
+        var that = this;
+
+        function waitUntilStopped(callback) {
+            that.getApp(id, function (error, result) {
+                if (error) return callback(error);
+
+                if (result.runState === 'stopped') return callback();
+                setTimeout(waitUntilStopped.bind(null, callback), 2000);
+            });
+        }
+
+        that.stopApp(id, function (error) {
+            if (error) return callback(error);
+
+            waitUntilStopped(function (error) {
+                if (error) return callback(error);
+
+                that.startApp(id, callback);
+            });
+        });
+    };
+
     Client.prototype.debugApp = function (id, state, callback) {
         var data = {
             appId: id,