Merge pull request #486 from Gerk/history

Fix for History URL Service
NOS - Update URLPatterns to match more URLs that contain video.
Al Jazeera English - Remove broken service (AJE now using Brightcove).
Spike - Catch unavailable media; remove the very, very low qualities from the list.
Adobe TV - Set default value for 'fmt' in PlayVideo.
CBS - Catch regex failures (= media not found/not available)
Update Contents/Service Sets/com.plexapp.plugins.khanacademy/ServiceInfo.plist
4tube - Updated icon
New URL Service for fux.com
Merge branch 'master' of github.com:plexinc-plugins/Services.bundle
FUX - Remove Log()
NikSoftware - Remove btoken URL Service, let Fallback->YouTube handle everything.
Facebook - Fix video lookup and playback
Facebook - Also fix thumb and duration in MetadataObjectForURL
History Channel - Check for geoblock
Goal - Update player vars lookup regex
Sesame Street - Remove broken URL Service
Logo TV - If airdate is missing, this video is not available.
Bing - Update test url, remove tags
Bing - Catch 404s