Merge branch 'exclude-posts-visible-to-admin' into 'develop'

Exclude private and direct statuses visible to the admin when using godmode

Closes #1599

See merge request pleroma/pleroma!2272

diff --cc lib/pleroma/web/admin_api/admin_api_controller.ex
Simple merge

diff --cc test/web/admin_api/admin_api_controller_test.exs
Simple merge