also added author followups for singular images

also fixed some bugs

the extractor should be ready :)

I have removed the cookie "safeguard" (not using cookies until they are necessary) as I've come to the conclusion that it does more harm than good. There is no way to detect whether the extractor has skipped private images, that could have been possibly extracted otherwise. Also, doing this provides little to no advantages.

Fixed some metadata attributes from not decoding correctly from non-latin languages, or not showing at all.
Also improved few patterns.

-Added tests
-Fixed video extractor giving incorrect URLs
-Removed start warning
-Listed supported site correctly

I've chosen to remove the "reactions", "comments" and "views" attributes as I've felt that they require additional maintenance even though nobody would ever actually use them to order files.
I've also removed the "title" and "caption" video attributes for their inconsistency across different videos.
Feel free to share your thoughts.