(feat) add error message in login and signin views
(feat) show error message in signup
(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server(feat) login and signup work with server
Merge pull request #96 from Neco-Murphy/feat/authentification

(feat) login and signup work with server side