Merge pull request #749 from 7illusions/master

DLNA Discovery and Profile fixes
stub out dlna server
apply codec profile conditions
Chapter Thumbs - Remove crop & change thumb sample to 20
Merge pull request #751 from tikuf/master

Chapter Thumbs - Remove crop & change thumb sample to 20
implement dlna headers
restore thumbnail change
Merge pull request #2 from MediaBrowser/master

Sync