* Local media files (image, audio, video) can now be shared with Kore. Added token to HttpApp to improve security.
* Added 'Queue on Kodi' share option. 'Play on Kodi' skips the playlist while 'Queue on Kodi' puts the media link at the end of the playlist
- added method to HostConnection that returns a Future object instead of
taking a callback.
- added logic for handling null Handlers in HostConnection methods
- added method to HostManager to run a function that takes a HostConnection
in a background thread where the Future API results above can be
synchronously composed.
- replaced chain of callbacks in RemoteActivity with a sequence of
future gets in OpenSharedUrl.