Merge branch '1866-last-status-stuff' into 'develop'

Resolve "/api/v1/conversations returns the wrong `last_status`"

Closes #1866

See merge request pleroma/pleroma!2647

diff --cc CHANGELOG.md
index d2629bf842312bd8fa2d49a62a0fd7607b9c7a76,c546f1f04355f4ec22c7cec8c627bcb66bc4e360..2f291ad2a6090bc3c076b468d4da9150c49e7c03
--- 1/CHANGELOG.md
--- 2/CHANGELOG.md
+++ b/CHANGELOG.md
@@@ -6,8 -6,8 +6,9 @@@ The format is based on [Keep a Changelo
  ## [unreleased]
  
  ### Changed
+ - In Conversations, return only direct messages as `last_status`
  - MFR policy to set global expiration for all local Create activities
 +- OGP rich media parser merged with TwitterCard
  <details>
    <summary>API Changes</summary>
  - **Breaking:** Emoji API: changed methods and renamed routes.