New feature: Change some fonts on win32

First, thx 4 this wonderful&small&useful system :).

Now to the point. If I am correct, on win32 we can't change default font in "windowmanager" as we can in *nix systems. I can work with defaults, but other users in my department want the ability to change fonts for comments, folder view.

So I've build Wi with hardcoded setFont(...) in Application class. It will help 4 some time. But I want to extend settingsdialog (and maybe will do).