#54 error handler for is authorized

[litvinets]

1. In the commit "error handler" you can find only this solution
   .pipe(
   tap(response => {
   return response;
   }),
   catchError(err => {
   console.log("Error is"+ err);
   return throwError(err);
   })
   )
2. But then I've decided to add http-error.interceptor.ts and it reacts to all HTTP errors