gpodder: 3.8.4 -> 3.9.0

Changes in 3.8.5 (without bug IDs):

 * vimeo: Fix vimeo feed discovery
 * vimeo: Allow both http and https URLs
 * youtube: Improve channel migration code
 * youtube: Fix cover art downloading
 * Make the YouTube key button link to the gPodder Wiki
 * Add pattern to YouTube feed URL list
 * CLI: Cleanup old downloads on CLI startup
 * Gtk UI: Fix model column data types
 * Device sync: Handle sync failure when no space left
 * model: Limit filenames to 120 characters for eCryptFS
 * rename_download: Add add_sortdate and add_podcast_title option
 * Remove the unused 'pipe' IPC module
 * Fix coverage usage
 * Use Travis CI for running basic sanity tests
 * Various small code improvements and fixes

Release announcement for 3.8.5:

http://blog.gpodder.org/2015/12/gpodder-385-casting-agents-and-cowgirls.html

Changes in 3.9.0 (without bug IDs):

 * Added Korean translation
 * Device sync: Only fail if we can determine free disk space
 * Enqueue episodes after download
 * Ubuntu AppIndicator extension: 'visible' config option
 * gpodder.download: Ignore non-ASCII content-disposition header
 * Win32-launcher: Remove download feature (works around Norton warning)
 * Remove WebUI, QML UI and MeeGo 1.2 Harmattan support
 * Remove broken Flattr integration (use gpodder.net's Flattr support)
 * Redesign about dialog
 * Preferences: Move video services to separate tab
 * Vimeo: Fix Vimeo integration

Release announcement for 3.9.0:

http://blog.gpodder.org/2016/02/gpodder-390-helium-levitator-released.html



Built and tested locally on my machine.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @svenkeidel