Make FakeVim use the default find box instead of mini-buffer
Creator already has a find box that works fairly well, so there is no need for a mini-buffer mode for searching. This change makes FakeVim activate the standard find box when the user hits '/' or '?'. Note: right now both '/' and '?' do forward searching by default because the Creator find box lacks a "find backwards by default" mode. This can be added later to the find box if considered useful.