back-end install wizard

I backported Evan Hughes' install wizard for back-end to phpslash.  It is
in cvs now.  If you do an anon checkout it may not be mirrored yet.

Luis - can you see if you can add your download option?  Currently if it
can't write the ini file it displays it for cut and paste.  Also see if
maybe we could graft your editor on for modifying the other options, or
expand the questions.  It currently only does the bare minimum to get
started.

Since I didn't tag the 0.8alpha release yet and I screwed up and put the
templates in twice, I'm going to replace the download binary with a new
one.  If you've got any bug fixes, get them in.  I'm going to try to get
some new story text plugin changes done too.

Joe



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