fix: use initLoginFlow for code flow

#32

Author: maxisam

src/app/core/auth.service.ts

@@ -178,7 +178,7 @@ export class AuthService {
   public login(targetUrl?: string) {
     // Note: before version 9.1.0 of the library you needed to
     // call encodeURIComponent on the argument to the method.
-    this.oauthService.initImplicitFlow(targetUrl || this.router.url);
+    this.oauthService.initLoginFlow(targetUrl || this.router.url);
   }
 
   public logout() { this.oauthService.logOut(); }