Backport EE changes. Service method should be `get` and not `all`

Former-commit-id: ee886f93

app/assets/javascripts/environments/components/environment.js.es6

@@ -78,7 +78,7 @@ module.exports = Vue.component('environment-component', {
     this.isLoading = true;
-    return service.all()
+    return service.get()
       .then(resp => ({
         headers: resp.headers,
         body: resp.json(),

app/assets/javascripts/environments/folder/environments_folder_view.js.es6

@@ -92,7 +92,7 @@ module.exports = Vue.component('environment-folder-view', {
     this.isLoading = true;
-    return service.all()
+    return service.get()
       .then(resp => ({
         headers: resp.headers,
         body: resp.json(),

app/assets/javascripts/environments/services/environments_service.js.es6

@@ -5,7 +5,7 @@ class EnvironmentsService {
     this.environments = Vue.resource(endpoint);
   }
-  all() {
+  get() {
     return this.environments.get();
   }
 }