Bug#740151: debian-edu-install: Traditional Chinese interface shows garbage character

[Petter Reinholdtsen <pere@hungry.com>]

Control: found -1 1.720

[Franklin Weng]
> Shows garbage character
> See: http://www.goodhorse.idv.tw/files/skolelinux.jpg
> A square of unicode font missing character.

I suspect this is because the d-i font reduction code, briefly
discussed on <URL: https://wiki.debian.org/DebianInstaller/GUIFonts >,
only take into accout the characters used by translations of the
"official" d-i packages when creating the fonts to use in g-i.  If
there are any characters only used in debian-edu-install, they will be
missing in the reduced font.

We need to figure out exactly which character(s) is missing, and
update the installer to include them in its font.

-- 
Happy hacking
Petter Reinholdtsen