#15 Preferences GUI frontend

[Mart Raudsepp]

wxMUD needs a preferences GUI window.
At the moment I'm working on rewriting the
configuration backend to be wxFileConfig on all
platforms (for the possibility of transfering settings
files easily for the users) and each character having
it's own file. Also making preferences update more on
the fly, rather than delete settings and rewrite them
(slow and unreasonable, no need to let it construct
that binary sorted array all the time).

[Mart Raudsepp]

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All wxFileConfig an eternity ago.
New preference dialog created - most if not all wxConfig
items that exist and make sense to be exposed in GUI, have been.

Currently options are updated on-the-fly, as they are
changed, in the dialog. This is how the GNOME desktop mostly
works. Need to make it Apply/Cancel/OK for Windows, and add
a Close button for wxgtk port.

Also would be nice if on changing the preferences, they
would actually be shown as such. For example if you
currently change the background color, the background gets
to be that color only after a redraw of the output control,
not when the setting is changed in the backend.

Backing priority number down, as the immediate need is
mostly satisfied.