[ADF-2973] Angular pipe to get application configuration settings (#3301)

* app config pipe

* update docs

demo-shell/src/app.config.json

@@ -4,7 +4,8 @@
     "bpmHost": "http://{hostname}:{port}",
     "contextRootBpm": "activiti-app",
     "application": {
-        "name": "Alfresco ADF Application"
+        "name": "Alfresco ADF Application",
+        "copyright": "© 2016 - 2018 Alfresco Software, Inc. All Rights Reserved."
     },
     "languages": [
         {

demo-shell/src/app/components/login/login.component.html

@@ -52,7 +52,7 @@
     [disableCsrf]="disableCsrf"
     [showLoginActions]="showFooter"
     [showRememberMe]="showFooter"
-    copyrightText="© 2016 Alfresco Software, Inc. All Rights Reserved. (customised text)"
+    copyrightText="{{ 'application.copyright' | adfAppConfig }}"
     (success)="onLogin($event)"
     (error)="onError($event)">
     <div class="mobile-settings">