logotv updated url service
YouTube - Signature test
YouTube - Use CoralCDN for the time being, always better than old sigs.
YouTube - CDN hosted json
VK - Unquote titles, use fallback thumb
VRT - Use fallback thumb
Dumpert - Rewrite after site changes
xHamster - Add check for thumbnail
Fallback - Exclude certain websites
Merge pull request #736 from shopgirl284/logofix

Logo TV - update for @deferred