MastoFE uses `GET /api/v1/follow_requests` and PleromaFE uses
`GET /api/pleroma/friend_requests` which they query on the initial page
load.

Closes #677

Make it part of the info thing (and do a migration to ensure it's there)

`approve_friend_request`, and `deny_friend_request` actions.
Add follow_request_count to the user view.

get_or_fetch() handles the nickname verses URI differences transparently.

[#502] Fixed User.active_local_user_query to return users with nil or missing `info.deactivated`. Adjusted test.

Indices in postgresql rely on operators, so they won't be used if you use only functions.