Add WinAnsiEncoding for standard fonts

When using a PDF standard font, the encoding is set to WinAnsiEncoding.
In addition, a encoding function is used to translate from UTF-8 to
WinAnsiEncoding.
incorporated comments from @devongovett
Merge pull request #190 from helmuthb/dev/encoding-standardfonts

Support for latin1-special characters and euro-sign with standard fonts