UTF-8 -> CP1251 prototype

1. Use generate-table.py to generate a charmap from 8-bit char points (corresponding to CP1251) to UTF-8;
2. Use patched Font Converter (source), select generated charmap and generate a font;
3. Use font together with reverse charmap (can be generated with the same script) and decoding function in deecode.js to display Russian text from UTF-8 strings.