Change 'Authentication' to 'Authorization'

Fixes manfredsteyer#368

Author: jeroenheijmans

projects/lib/src/oauth-service.ts

@@ -331,14 +331,14 @@ export class OAuthService extends AuthConfig {
 
     /**
      * DEPRECATED. Use a provider for OAuthStorage instead:
-     * 
+     *
      * { provide: OAuthStorage, useValue: localStorage }
-     * 
+     *
      * Sets a custom storage used to store the received
      * tokens on client side. By default, the browser's
      * sessionStorage is used.
      * @ignore
-     * 
+     *
      * @param storage
      */
     public setStorage(storage: OAuthStorage): void {
@@ -638,7 +638,7 @@ export class OAuthService extends AuthConfig {
             if (this.useHttpBasicAuthForPasswordFlow) {
                 const header = btoa(`${this.clientId}:${this.dummyClientSecret}`);
                 headers = headers.set(
-                    'Authentication',
+                    'Authorization',
                     'BASIC ' + header);
             }
 
@@ -845,7 +845,7 @@ export class OAuthService extends AuthConfig {
         const redirectUri = this.silentRefreshRedirectUri || this.redirectUri;
         this.createLoginUrl(null, null, redirectUri, noPrompt, params).then(url => {
             iframe.setAttribute('src', url);
-            
+
             if (!this.silentRefreshShowIFrame) {
                 iframe.style['display'] = 'none';
             }