* Remove unused method #set_counters_maps from api controller

* Remove unused method #set_account_counters_maps from api controller

* Remove unused method Account#followers_domains

* Remove unused User.prolific scope

* Add mastodon:users:admins task to list all admin emails

* Use interpolated query style in Account.triadic_closures

* Coverage for Account.triadic_closures

Also improve efficiency of the mastodon:maintenance:add_static_avatars task

* Unite all mandatory rake tasks in mastodon:daily
Add mastodon:media:remove_remote task
Make mastodon:maintenance:add_static_avatars more resilient to exceptions

* Fix typo in task description

Before it cleared out user records only (e-mail, password) without
freeing up the associated username (account record). Furthermore, since
these records have no dependent records (due to no user activity)
they can be deleted quickly with delete_all instead of destroy

* Add tasks for open/close registration

* Code climate style fix

* Use true instead of string 'true'

* add task in order to delete unconfirmed user

* change 7 days to 2

* When avatar/header are GIF, generate static versions.
Account API returns "avatar"/"avatar_static", "header"/"header_static"
Static version is the same as original for other cases
Web UI de-animates avatars in toots, lists of users

Fix #441, fix #596, prerequisite for #1064

* Fix JS test

* Add rake task to generate static avatars/headers from GIF ones, add test

* Adds task to confirm user by email.

* Adds documentation for manual confirmation.

redis-backed "mentions" timeline as redundant (given notifications)

(without avatar). Also improved search position of exact matches

to the API

respect hub.lease_seconds (fix #46)

and atom feed generation to some extent, as well as the way mentions are
stored

local followers. Remote users' usernames SHOULD be case-sensitive