Full unicode support

[tillgrallert]

I guess this might be more of a feature request than a proper bug report but full unicode support would be necessary even for most European languages written in Latin script. I have had a brief look at the HTML source and it seems this might be a display issue that can be solved by simply adding the appropriate meta tag (<meta charset="utf-8"/>).

I would also like to express my gratitude for this impressive effort at building an web editor for TEI. Thank you!