Made the game time displayed and refreshed more properly in the menu mode.
Made the different menu states reset properly once loaded.

This permitted to fix the help text not being updated,
and permitted me to make the last viewed character status updated
properly after equipping.

I also removed the _OnEntry() which was only doing the duplicate
of Reset() + setting a pointer value at one place.
I thus removed it and used Reset() instead.
Used global sounds and reousrces in the menu mode.