Merge branch 'release/0.29.0.3'
Merge branch 'release/0.29.0.4'
Merge branch 'release/0.29.0.5'
Implement a purge folder feature, to remove all content (remove subfolders too, and cancel all subscriptions).
Purge folder feature in urls/views.
Purge folder button.
version bump
Merge branch 'hotfix/0.29.1' into develop