Big Ass Update #3
Se agrego los queries de unidadmedica, entidad y personal
Se agrego los converters de unidadmedica, entidad  y personal
Se agrego los comboboxes a la pagina de pacientesEntradas.xhtml
Implemented equals and hashcode
Added initial time and date created to save method.
Quick formating of xml
Quick formating.
Added context parameter PROJECT_STAGE
Added new support class JAASUtil.
Encapsulates related JAAS operations (search if use is in role).
Added various utilities and support classes.
Added isAdmin method.
Added new utility JSFContextUtil.
Helps to perform redirection and invalidation of session.
Moved time and date created business rule from controller to ejb.
Cleanup.
Added web components enumeration.
Created DbMessages enumeration.
Created InfoMessages enumeration.
Also renamed DbMessage to DbMessages.
Added new custom exceptions.
Added new support classes for controllers and crud controllers.
Moved BaseModel and BaseEjb to com.isesalud.support.components package.
Moved all remaing base classes to com.isesalud.support.components
package.
Code cleanup.