[ADF-4713] Add new DecimalNumber Pipe to transform and localize numbers (#4926)

* [ADF-4713] Add new DecimalNumber Pipe to transform and localize numbers

* Unsubscribe from userPreference service

* Make Pipe impure

* Add documentation in localization page

demo-shell/src/app/components/pipes/pipes.component.ts

@@ -0,0 +1,42 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component } from '@angular/core';
+import { AppConfigService } from '@alfresco/adf-core';
+
+@Component({
+    selector: 'app-pipes-page',
+    templateUrl: './pipes.component.html',
+    styleUrls: ['pipes.component.scss']
+})
+export class PipesComponent {
+
+    today = new Date();
+    locale: string;
+    format: string;
+    number = 12345.56;
+    decimalValues = {
+        minIntegerDigits: undefined,
+        minFractionDigits: undefined,
+        maxFractionDigits: undefined
+    };
+    languages: any[];
+
+    constructor(private appConfig: AppConfigService) {
+        this.languages = this.appConfig.get('languages', []);
+    }
+}