#257 choose best out-of-the-box setup for international page ids/names

See InternationalCharactersInPageNames and Regexps.py . Should we try to enable some international characters in page names by default ? Should we rely on locale settings, or hard-code them ?

 # WikiNames can also contain (single-byte) international characters,
 # usually depending on your locale.  The code below tries to enable them
 # out of the box for most setups. You can set a specific (installed)
 # locale here with ZWIKI_LOCALE, or leave it as None to use the default
 # system locale.  If no particular locale appears to be set, we hard-code
 # the characters and emulate the \b pattern. In this case word boundaries
 # may not be recognized quite as well.