Posibility to close all the opened windows

[ByReaL]

in the window menu add "Close All" option in order to clear the workspace


i click on the left menu on many maps/constants , and if i want to close all of them i have to close one at a time

[Matt]

another easy change. we have a close all function which gets used when opening different address files... just have to call it from the menu item.

added to list