Merge branch 'feature/store-statuses-data-inside-flag' into 'develop'

Store status data inside flag activity

See merge request pleroma/pleroma!1849

diff --cc lib/pleroma/web/activity_pub/activity_pub.ex
Simple merge

diff --cc test/web/activity_pub/activity_pub_test.exs
Simple merge

diff --cc test/web/activity_pub/transmogrifier_test.exs
Simple merge

diff --cc test/web/common_api/common_api_test.exs
Simple merge