Eliminate letters unsupported by the UI + title + ending font

[shippy]

In the following order of preference:

1. Replace with a synonym that doesn't have the problematic orthography
2. Replace with the same letter without the problematic diacritic (časoprostor -> casoprostor)

[xen-42]

You could also replace the fonts entirely to ones which support all the characters (I could help with this)

[shippy]

That's an intriguing proposition, thank you! We'll try to identify some candidate replacement fonts (I don't want the game to look too different) and get back to you.