* Change mailer avatar url

* Use full_asset_url method

* Use PNG images in HTML e-mails

* Make webpack use URLs with host so fonts load inside HTML e-mails

Convert this back to a relative URL in the premailer CSS loader
since local requests are quicker

* Improve responsive design

* Add missing PNG icon

* Make text e-mails consistent with HTML ones in UserMailer

* Fix UserMailer specs

* Remove onboarding modal

* Welcome e-mail

* Send welcome e-mail after confirmation

* Remove obsolete translations

* Change image URL in mailer to full path

* Add application_mailer.view_profile localization.

* HTML e-mails for NotificationMailer (except digest)

* Add HTML template for digest

* Fix build

- premailer gem to turn CSS into inline styles automatically
- rework UserMailer templates
- reword UserMailer templates

* Handle sessions that can't be translated

This commit fixes #6165.

* Fix typo

* i18n: (zh-CN) Add translations of #6125

* i18n: (zh-CN) Add translations of #6132

* i18n: (zh-CN) Add translations of #6099

* i18n: (zh-CN) Add translations of #6071

* i18n: (zh-CN) Improve translations

* Create email_changed.oc.html.erb

* Create email_changed.oc.text.erb

* Update email_changed.oc.html.erb

* Update email_changed.oc.html.erb

* Create reconfirmation_instructions.oc.html.erb

* Create reconfirmation_instructions.oc.text.erb

* Update confirmation_instructions.oc.html.erb

* Update confirmation_instructions.oc.text.erb

* Update confirmation_instructions.oc.html.erb

* Update reconfirmation_instructions.oc.html.erb

* Update reconfirmation_instructions.oc.text.erb

* Update reconfirmation_instructions.oc.html.erb

* Allow to dereference Follow object for ActivityPub

* Accept IRI as object representation for Accept activity

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

* yarn manage:translations

* Add Japanese translation for #5997

* Add Japanese translation for #6003

* Add Japanese translation for #6004

* Add Japanese translation for #6071

* Add Japanese translation for #6099

* Add Japanese translation for #6125

* Add Japanese translation for #6132

* 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