Bug fixing and redesign

Over the last thew versions, even though I spend a lot of time in debugging, many little bugs appear. Sometimes they comes just from moving a function or mistyping and sometimes deeper.
So with this version I fixed again many of them, like wrong time show in the achievements and many others.
Furthermore I worked and correcting and redesigning the whole terminal help logic, giving the main achievements new names and, like you see in the picture, modified the general achievements screen so that it not just looks better, but also feels better in reason of an improved algorithm to hide the mouse and navigation buttons.

PS: If you use it and find a bug, it would be really nice if you could comment it.