Several little tweaks and fixes

- Fix scroll wheel in terrain area going beyond section boundaries
- Fix text not being drawn in dialog text fields when first activated
- Fix terrain being painted while scrolling the map to the east (especially with the keypad)
- Fix item or monster palette remaining active while editing outdoors
- When using a large brush, hilite all affected spaces

src/dialogxml/field.cpp

@@ -232,8 +232,8 @@ void cTextField::draw(){
 			}
 		}
 		undo_clip(*inWindow);
+		changeMade = false;
 	}
-	changeMade = false;
 	clip_rect(*inWindow, frame);
 	ip_col = ip_row = -1;
 	if(haveFocus) {