Revert "Merge branch 'spc-fix-3' into 'develop'"

See merge request pleroma/pleroma!745

This reverts merge request !682

Spc fix 3

See merge request pleroma/pleroma!682

Features/glitch soc frontend

See merge request pleroma/pleroma!192

[MastodonFE] Update Frontend (glitch)

See merge request pleroma/pleroma!730

Add wiki reference to readme

See merge request pleroma/pleroma!744

Fix 4aff4efa typos

See merge request pleroma/pleroma!743

update frontend

See merge request pleroma/pleroma!742

Use multiple hackney pools

See merge request pleroma/pleroma!739

Use race condition free queries for following / unfollowing

See merge request pleroma/pleroma!740

* federation (ap, salmon)
* media (rich media, media proxy)
* upload (uploader proxy)

Each "part" will stop fighting others ones -- a huge federation outbound
could before make the media proxy fail to checkout a connection in time.

splitted media and uploaded media for the good reason than an upload
pool will have all connections to the same host (the uploader upstream).
it also has a longer default retention period for connections.

docs/config.md: Fix syntax, pleroma_fe isn’t an atom

See merge request pleroma/pleroma!738

docs/config.md: Fix typo, provide an example key with camelCase and where to find more

See merge request pleroma/pleroma!737

[ci skip]

docs/Pleroma-API.md: Fix ex_doc title by changing the first h1 to it

See merge request pleroma/pleroma!736

[ci skip]

follow request fixups

Closes #537

See merge request pleroma/pleroma!734

New frontend configuration mechanism.

Closes #445

See merge request pleroma/pleroma!700

activitypub: utils: update the state of *any* pending follow relationship that matches the actor and target

Rich Media support, part 2.

See merge request pleroma/pleroma!719

App list changes: Separate into two categories, and drop Subway Tooter.

See merge request pleroma/pleroma!731

This is in preparation for 1.0. We'll be able to switch the config to the new
mechanism on PleromaFE then as well.