message display improvements

[DaviddesJ]

I'd like to be able to use more than one line at the top of my main window for messages. This would make it much easier to keep track of everything that happens each "turn", without having to hit "more" all the time. With a 60 line window, surely I can afford more than one line of space for messages.

Related, in the side window that has all of the messages, I'd like to have some way to break up visually what happens each "turn" (i.e., since my last explicit action). One idea would be to just insert a blank line in that window every time I act. Another idea would be to color-code the results of my actions differently than the results of monster actions or passive events. Yet another idea would be an option to explicitly clear that window each time I act, so the message window only contains the stuff that happened since my last action.