Tests de http client

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@106 0117bdac-9510-e2bd-253c-24df4fda417d
Add junit and permission to access internet

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@107 0117bdac-9510-e2bd-253c-24df4fda417d
Clase utilitaria para consumir servicios via HTTP/XML

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@108 0117bdac-9510-e2bd-253c-24df4fda417d
Chequea preferencias y solicita username si no existe

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@109 0117bdac-9510-e2bd-253c-24df4fda417d
Guarda nombre de usuario configurado

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@110 0117bdac-9510-e2bd-253c-24df4fda417d
Muestro mensaue cuando se guarda o no el username. Implemente "volver"

git-svn-id: https://tdam-2013-g5.googlecode.com/svn/trunk@111 0117bdac-9510-e2bd-253c-24df4fda417d