* added support of Podcasting 2.0 transcripts and youtube captions (via ut.urn)
* in PlayerDetailed, the selected transcript can be shown as captions
* consolidated episode share into ShareDialog
* in player pipeline, user agent is set to resolve some redirect rejections
* added auto-reconnect mechanism for external source clients
* fixed some podcast url type not properly detected when adding podcast
* upped PodciniLib to 1.1.4, external apps (if used) need to be updated for compatibility
