patches from James Antill: change the attack/defense box's minimum size, to avoid...

patches from James Antill: change the attack/defense box's minimum size, to avoid message wraps as much as possible. Change the toggle page keybinds from F1, F2 and F3 to Alt+1,2,3 as the previous ones were normally captured by window managers. Add different colours for events in attacks/defenses. Fix the random order of added special blocks when the player just has one.