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NOTE: The scrapper was previously included, but due to the website it scrapped
being dead it's no longer useful. See #3642 for the code.
Co-authored-by: Marc Cornellà <marc.cornella@live.com>

few quotes were missing the '%' line delimiters,
so some of the quotes were appearing at once merged together

Gives a better error message than "command not found: strfile", because
it's not obvious to many users that strfile is part of fortune.
Also handles the weird /usr/sbin install location for strfile on Cygwin.

plugins/chucknorris: Add automatic updating of the compiled fortune data file. Use local variable for readability, and anonymous function to provide a scope for the local variable.