Making page up/down scroll the diff, not commit list.

Author: caius

PBCommitList.m

@@ -26,8 +26,17 @@ - (void)keyDown:(NSEvent *)event
 	if ([event modifierFlags] & NSShiftKeyMask && [event modifierFlags] & NSCommandKeyMask && ([event keyCode] == 0x7E || [event keyCode] == 0x7D)) {
 		[self.nextResponder keyDown:event];
 		return;
-	}
+  }
+
+  if ([event keyCode] == 116) {
+    [webView scrollPageUp:self];
+    return;
+  } else if ([event keyCode] == 121) {
+    [webView scrollPageDown:self];
+    return;
+  }
 
+  
 	if ([character isEqualToString:@" "])
 	{
 		if ([event modifierFlags] & NSShiftKeyMask)