* Add confirmation step for email changes

This adds a confirmation step for email changes of existing users.
Like the initial account confirmation, a confirmation link is sent
to the new address.

Additionally, a notification is sent to the existing address when
the change is initiated. This message includes instruction to reset
the password immediately or to contact the instance admin if the
change was not initiated by the account owner.

Fixes #3871

* Add review fixes

* delete X-UA-Compatible

* undo

* restore

Serbian latin (sr-Latn) is generated automatically from Serbian (sr) translation. Also changed some wording in original (Serbian) translation.

* Adding Serbian translation

* i18n-tasks normalize

* Add GET /api/v1/instance/peers API to reveal known domains

* Add GET /api/v1/instance/activity API

* Make new APIs disableable, exclude private statuses from activity stats

* Fix code style issue

* Fix week timestamps

* Reduce motion for boost animation

Fixes #5833

* Fix ternary expression

Deleted users are technically suspended, but the code displaying their status
in the admin interface was broken and displayed a javascript object holding
translations of the possible user roles instead.

* Add staff filter to admin UI for accounts, remove obsolete columns

* Only display OStatus section in admin UI for accounts when OStatus data

* Remove rabl dependency

* Replicate old Oj configuration

* Show "expired" in invite index

* "Force expire" -> "Deactivate"

* Add consumable invites

* Add UI for generating invite codes

* Add tests

* Display max uses and expiration in invites table, delete invite

* Remove unused column and redundant validator

- Default follows not used, probably bad idea
- InviteCodeValidator is redundant because RegistrationsController
  checks invite code validity

* Add admin setting to disable invites

* Add admin UI for invites, configurable role for invite creation

- Admin UI that lists everyone's invites, always available
- Admin setting min_invite_role to control who can invite people
- Non-admin invite UI only visible if users are allowed to

* Do not remove invites from database, expire them instantly

* Add logging of admin actions

* Update brakeman whitelist

* Log creates, updates and destroys with history of changes

* i18n: Update Polish translation (#5782)

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Split admin navigation into moderation and administration

* Redesign audit log page

* 🇵🇱 (#5795)

* Add color coding to audit log

* Change dismiss->resolve, log all outcomes of report as resolve

* Update terminology (e-mail blacklist) (#5796)

* Update terminology (e-mail blacklist)

imho looks better

* Update en.yml

* Fix code style issues

* i18n-tasks normalize

* Allow staff badge to change from setting to hidden

* i18n: Update Polish translation

* Serialize moved accounts into REST and ActivityPub APIs

* Parse federated moved accounts from ActivityPub

* Add note about moved accounts to public profiles

* Add moved account message to web UI

* Fix code style issues

* Add option to block direct messages from people you don't follow

Fix #5326

* If the DM responds to a toot by recipient, allow it through

* i18n: Update Polish translation (for #5669) (#5673)

* Improved e-mail messages; delted repeated words

* pt-BR.json translations updated

* Revert "pt-BR.json translations updated"

This reverts commit 108c460531.

* Updated pt-BR.json

* pt-BR.yml updated

* Add moderator role and add pundit policies for admin actions

* Add rake task for turning user into mod and revoking it again

* Fix handling of unauthorized exception

* Deliver new report e-mails to staff, not just admins

* Add promote/demote to admin UI, hide some actions conditionally

* Fix unused i18n

* Changed ĩ => ï

* Changed ĩ => ï

* Add ability to disable login and mark accounts as memorial (#5615)

Fix #5597

* Show the local couterpart of emoji when it exists in admin/custom_emojis

* Fix indentation

* Fix error

* Add class table-action-link to Overwrite link

* Make it enable to overwrite emojis

* Make Code Climate happy

* i18n: (zh-CN) fix punctuations and spaces
Spaces are fixed according to https://github.com/sparanoid/chinese-copywriting-guidelines

* i18n: (zh-CN) fix punctuation

* i18n: (zh-CN) Adapt official translation of Discourse Privacy Policy from GitHub, with minor fixes
https://github.com/discourse/discourse/blob/master/config/locales/server.zh_CN.yml#L2677

* i18n: (zh-CN) Update missing translations

* i18n: (zh-CN) Fixing errors

* i18n: (zh-CN) Fix indent error

* i18n: (zh-CN) Fix language tag

* i18n: (zh-CN) Remove quotes

* i18n: (zh-CN) Update translation (#5485)

* i18n: (zh-CN) Remove whitespaces, x -> ×

* i18n: (zh-CN) Rewording on time distance

* i18n: (zh-CN) Overall improvements

* i18n: (zh-CN) i18n-tasks normalization

* i18n: (zh-CN) Add missing translation

* Swedish file added

* Swedish file added

* Swedish file updated

* Swedish languagefile added

* Add Swedish translation

* Add Swedish translation

* Started the Swedish translation

* Added Swedish lang settings

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Updating Swedish language

* Swedish language completed and added

* Swedish language Simple_form added

* Swedish language Divise added

* Swedish language doorkeeper added

* Swedish language - now all file complete

* Fix #5082 - disable retweet link for followers only toot

* Hide reblog count when it is a direct message

* Add option to reduce motion

* Use HOC to wrap all Motion calls

* fix case-sensitive issue

* Avoid updating too frequently

* Get rid of unnecessary change to _simple_status.html.haml

* Fix #5351 - Redirection with page params after copy emoji

* Add page params to copy emoji link