A fix for default TF2 fonts not showing correctly for non-English text

KBNHud shows non-English text (for example when using Russian localization) that should use fonts shipped with TF2 using system font instead. Fix adds some ranges to ClientScheme.res (taken from original HUD files).

**Before:**
![Before](http://i.minus.com/ibnLq3zmZFrioR.jpg)
**After:**
![After](http://i.minus.com/iXwSb1AjcIZY8.jpg)


Also, one suggestion: add optional customization to replace Maven with font that supports wider range of characters (DejaVu Sans Condensed looks good IMO, other suggestions are Droid Sans and Roboto) to fix the same problem as above for non-Latin characters in various places (nicknames etc).