Remove podcast episode automatic deleter out of PodcastDownloader
Allows to download multiple podcasts at the same time
A new PodcastDeleter, it deletes podcast episodes
Fix copyright notices
Fix copyright notices
Fix copyright notices
Fix errors, needed for a pull
Fix errors, cherry picked make format fixes
Fix errors, newline was here
Ability to cancel downloads in progress
Fixes #3661
Fix header files order
Fix header files order
Now without sender
Merge pull request #4648 from sobkas/master

PodcastDownloader changes