Add hostsToRewrite option and advanced-options page. #809
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Migrate host rewriting functionality from the advanced crawling addon, with improvements.
It's useful to rewrite hosts other than the one we are crawling. Often there are links which reference a development or staging URL that we want to replace. This can also be used to rewrite http://deployment-url.com to https://deployment-url.com.
The incidental change from str_replace to strtr may fix some of the reported bugs with the host rewriting.