V1 spring-security

home page shows logged user, the sign up and sgn in.
Authentication is static based in memory user list
Ignored jrebel files
Register Accoun V1

- Send account to Controller and Validate with spring the annotations.
- simple authenticationProvider based in account service
- TODO validation with jquery
- TODO save account
- TODO success page for registration
Register and login working with accounts

- jquery-validation in register form
- authenticationProvider against accounts is ok
- navbar include is ok por login, register, article/search pages