feat(webui): Add dashboard filter.

- Convert Object properties to and array for backends and frondends for each providers.
- Remove unused parameters.
- Add filter.

webui/src/app/core/providers.resource.js

@@ -8,7 +8,40 @@ angular
   .module(traefikCoreProvider, ['ngResource'])
   .factory('Providers', Providers);
 
-  /** @ngInject */
-  function Providers($resource) {
-    return $resource('../api/providers');
-  }
+/** @ngInject */
+function Providers($resource) {
+  const resourceProvider = $resource('../api/providers');
+  return {
+    get: function () {
+      const rawProviders = resourceProvider.get();
+
+      for (let providerName in rawProviders) {
+        if (rawProviders.hasOwnProperty(providerName)) {
+
+          // BackEnds mapping
+          let bckends = rawProviders[providerName].backends;
+
+          rawProviders[providerName].backends = Object.keys(bckends)
+            .map(key => {
+              const goodBackend = bckends[key];
+              goodBackend.backendId = key;
+              return goodBackend;
+            });
+
+          // FrontEnds mapping
+          let frtends = rawProviders[providerName].frontends;
+
+          rawProviders[providerName].frontends = Object.keys(frtends)
+            .map(key => {
+              const goodFrontend = frtends[key];
+              goodFrontend.frontendId = key;
+              return goodFrontend;
+            });
+
+        }
+      }
+
+      return rawProviders;
+    }
+  };
+}