Mastodon API: do not create a following relationship if the corresponding follow request doesn't exist when calling `POST /api/v1/follow_requests/:id/authorize`

Prevents the possibility of re-registration, which allowed to read
DMs of the deleted account.

Also includes a migration that tries to find any already deleted
accounts and insert skeletons for them.

Closes pleroma/pleroma#1687

[FIX] [#1732] Made AP C2S :followers and :following endpoints serve on no auth

Closes #1732

See merge request pleroma/pleroma!2463

(as for related :api pipeline endpoints).

Follow request notifications enforcement

See merge request pleroma/pleroma!2451

PleromaFE bundle supporting follow request notifications

See merge request pleroma/pleroma!2462

pleroma/pleroma-fe@5f90b6a3

static-fe.css: Restore and move to /priv/static/static-fe

See merge request pleroma/pleroma!2458

Fix sporadic test compilation failure caused by unused alias

See merge request pleroma/pleroma!2460

OpenAPI: Add `follow_request` to notification types

Closes #1731

See merge request pleroma/pleroma!2459

Closes #1731

OpenAPI: Remove max pagination limit from the spec

See merge request pleroma/pleroma!2457

In an ideal world clients wouldn't try to request more than the max
hardcoded limit, but SubwayTooter does.

Bugfix/1727 fix signature decoding

Closes #1727

See merge request pleroma/pleroma!2454

Notifications loading fix (PleromaFE)

See merge request pleroma/pleroma!2455

Updated PleromaFE bundle to prevent notifications loading issue due to unsupported parameter (`with_move`).

Mastodon and Gab sometimes send the format `acct:name@server`.

Add OpenAPI spec for NotificationController

See merge request pleroma/pleroma!2437

Add OpenAPI spec for ReportController

See merge request pleroma/pleroma!2434

[#1577] fix mediaType of object

See merge request pleroma/pleroma!2372

Fix account registration when captcha is enabled but not provided

Closes #1712

See merge request pleroma/pleroma!2438

Update AdminFE build in preparation for the 2.0.3 release

See merge request pleroma/pleroma!2442

Increase tests on AP C2S

See merge request pleroma/pleroma!2449

Dismiss the follow request notification on rejection

See merge request pleroma/pleroma!2447

Related: pleroma/pleroma#954

Updated emoji API endpoints

Closes #1649, #1604, and #1545

See merge request pleroma/pleroma!2179