feat(dashboard): new Dashboard

- show providers (auto refresh: 2s)
- show health (auto refresh: 3s)
- more colors
- add font
- remove jumbotron
- javascript minified version

static/app/sections/providers/backend-monitor/backend-monitor.directive.js

@@ -0,0 +1,21 @@
+(function () {
+  'use strict';
+
+  angular
+    .module('traefik.section.providers.backend-monitor')
+    .directive('backendMonitor', function () {
+      return {
+        restrict: 'EA',
+        templateUrl: 'app/sections/providers/backend-monitor/backend-monitor.html',
+        controller: 'BackendMonitorController',
+        controllerAs: 'backendCtrl',
+        bindToController: true,
+        scope: {
+          backend: '=',
+          backendId: '=',
+          providerId: '='
+        }
+      };
+    });
+
+})();