SearchController: Trim query.

Closes #1912

See merge request pleroma/pleroma!2717

[#1892] Exclusion of service actors from user search results

Closes #1892

See merge request pleroma/pleroma!2708

Notification Backfill: Explicitly select the needed fields.

Closes #1910

See merge request pleroma/pleroma!2715

Prevents a crashing migration when we change user fields.

[#1892] Excluded internal users (applications) from user search results, reinstated service actors in search results.

Feature/1885 mrf metadata

Closes #1885

See merge request pleroma/pleroma!2693

Add more FE-required fields to /api/v1/instance

See merge request pleroma/pleroma!2613

Don't fail fetching when the user in a replied-to message can't be fetched.

See merge request pleroma/pleroma!2711

Resolve "Streaming API: Repeats of your posts from random people are pushed to the timeline"

Closes #1907

See merge request pleroma/pleroma!2714

Update settings descriptions and labels

See merge request pleroma/pleroma!2709

ActivityPub: Handle clashing nicknames for the same ap id

Closes #1716

See merge request pleroma/pleroma!2712

If we get a new user (identified by ap_id) that would have the same
nickname as an existing user, give the existing user a nickname that
is prepended with the user id, as this will never clash.

This can happen when a user switches server software and that soft-
ware generates ap ids in a different way.

Revert "Merge branch 'avatar-removing' into 'develop'"

See merge request pleroma/pleroma!2710

This reverts merge request !2701

Rename user.settings column

See merge request pleroma/pleroma!2707

This is used exclusively by MastoFE/GlitchFE now

Some fixups for the preload.

See merge request pleroma/pleroma!2692

Use correct PostgreSQL version command in bug template

See merge request pleroma/pleroma!2706