Merge branch '1865-media-only' into 'develop'

Resolve "/api/v1/accounts/:id/statuses?only_media=true returns media that is not owned"

Closes #1865

See merge request pleroma/pleroma!2650

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 - **Breaking:** Elixir >=1.9 is now required (was >= 1.8)
 - In Conversations, return only direct messages as `last_status`
+- Using the `only_media` filter on timelines will now exclude reblog media
 - MFR policy to set global expiration for all local Create activities
 - OGP rich media parser merged with TwitterCard
 <details>