Add the "http://http://..." fix from MediaWords::Util::URL to Bit.ly URL normalizer
Remove obsolete FIXME
Rename normalize_url() to normalize_url_lossy() to make it clear that the subroutine is not general-purpose
Set a number of expected parameters for subroutine
Add some unit tests for MediaWords::Util::URL::get_url_domain(), add FIXMEs for broken test cases (mis-parsed domains)
Add some unit tests for MediaWords::Util::URL::normalize_url_lossy(), add FIXMEs for broken test cases (mis-parsed URLs)