Added method to set thumbnail information
Added implementation for setThumbnailUrl method
Added thumbnailUrl
Added method to get kaltura session id
Updated listeners variable access modifier as protected to access from derived classes
Added support for upload progress bar. Also updated to upload videos to Kaltura asynchrnously using a different thread
Added support for upload progress bar. Also updated to upload videos to Kaltura asynchrnously using a different thread
Merge branch 'feature/kaltura' of https://github.com/perfectsense/dari into feature/kaltura