Embedded object federation

Closes #1959

See merge request !2794

[#1934] welcome email

See merge request !2786

ReverseProxy: Fix a gun connection leak when there is an error with no body

See merge request !2798

Update types in Pleroma.Formatter group in description.exs

See merge request !2796

This is no longer relevant because we use a custom
FollowRedirects middleware now

OpenAPI: Replace actor_id by account_id to follow ChatMessage schema

See merge request !2797

body

- Modify `close/1` function to do the same thing it does for hackney,
which is - close the client rather than the whole connection
- Release the connection when there is no body to chunk

Fix/mix tasks

Closes #1972 and #1970

See merge request !2795

Fixes: mix pleroma.user rm username

Allow unblocking a domain via query params

Closes #1971

See merge request !2783

Add MRF related policies field to description.exs

See merge request !2790

StatusView: Handle badly formatted emoji reactions.

Closes #1976

See merge request !2788

[#1973] Fixed accounts rendering in GET /api/v1/pleroma/chats with truish :restrict_unauthenticated setting

Closes #1973

See merge request !2791

Fix #783: Make MRF reject log as info level instead of error

Closes #783

See merge request !2758

[#1878] fix reset confirmation email in admin section

See merge request !2751

Fix Linkify

See merge request !2792

[#1973] Fixed accounts rendering in GET /api/v1/pleroma/chats with truish :restrict_unauthenticated.
Made `Pleroma.Web.MastodonAPI.AccountView.render("show.json", _)` demand :for or :force option in order to prevent incorrect rendering of empty map instead of expected user representation with truish :restrict_unauthenticated setting.