[gopher] overbite search result character set support

[Mate Nagy <k-zed@hactar.net>]

Helloh,
 I may have some gripes with Overbite (or maybe I'm Doing it Wrong):
 1. refresh on results of a 7 query doesn't ask to repost the data (or
doesn't repost the data automatically without asking); but asks for
search phrase again
 2. when you want to explicitly set the character encoding for the
result page in the View menu, it asks for the search phrase again
 3. the setting in the character encoding menu doesn't seem to have any
effect.

Regards,
 Mate