use a new official api call for favorites count

I had to use an unofficial method before, but it
will be disabled in a few weeks; luckily, they've
finally added the favorites count as an official
field on the standard response, so I can simplify
the code
show false positives/negatives in a different color

tweets that should have been retweeted but weren't
will be shown in green, and those that shouldn't
have been retweeted but were will be shown in red
updated whitelist and blacklist

mostly DHH filtering