Update deps

Cache control header and use of http constant

USer signup test

Mocking Store for End-toEnd testing

Manage cookies and redirection in http test

End-to-End sample with httptest

Unit test samples for handlers and middleware

Added ping end point for status-checking

Files renaming

Using Request Context for authentication and authorization

User authentication and CSRF protection

- cookie session manager

- form data validation

- use Pat router

secure, log and panic middleware