Skip load screen

[2bt]

It looks like loading of resources is limited by the frame rate where only one resource per frame is allowed. On modern hardware, loading is quasi instant so I think the screen can just be skipped.

[Mia75owo]

This is kinda related to #72
The version of the Hurrican source code supports multiple different platforms, so
the loading screen is still needed on some older platforms. I'm thinking about rewriting the sprite loading system in general, as it contains code which updates the screen outside of the main loop (which is a problem on some platforms).

[2bt]

Uh, your fix is much nicer. Too bad it's not merged.