Revert "Revert "cambios en la barra de menus""

This reverts commit 4b0554e8ce31a516c65e8667a68b9ee0b291a47d.
Revert "Revert "cambios en ventanas, minimizadas del chat""

This reverts commit f59ebf652ce0703a5af675ca3eb5dafaf0eccfed.