JSON controllers refactored:
spring controllers are singleton (as common servlet) so we can't
implements IView because his properties are shared
View: list laboratories refactored, register laboratory implemented
bugfix, hibernate needs default constructor
bugfix, jackson needs default constructor
UserService birthDate renamed to birth_date
Log for unhandled exception implemented
Users and laboratories list and registers implemented
old files removed
Register computer request refactured
bugfixes:

- string == string comparation to s.equals(s)

- JPA query column names fixed

refactory:

- list computer response parameters not camel case
View: list computer and register computer implemented