Misc fixes and improvements to the page url extraction engine for:

• ceskatelevize
• discoverynetworks
• dplay
• extractors
• facebook
• generic
• globo
• go
• internetvideoarchive
• la7
• mtv
• nbc
• odnoklassniki
• puhutv
• soundcloud
• tenplay
• thesun
• videodetective
• vk