hideafter: doesn't reset when a new hud is called

[mefistody]

I am not sure if it's a bug or a feature, but I changed the hideAfter method with this:

• (void)hideAfter:(NSTimeInterval)delay {
  [NSObject cancelPreviousPerformRequestsWithTarget:self
  selector:@selector(hide)
  object:nil];

  [self performSelector:@selector(hide) withObject:nil afterDelay:delay];
  }

This way, when a new hud is shown it will stay the time specified even though there was another hud showing up before.

[uranpro]

fixed in my commit