Fixes #6197.

* 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

A change introduced in #6125 prevents
`Devise::Models::Confirmable#confirm` from being called for existing
users, which in turn leads to `email` not being set to
`unconfirmed_email`, breaking email updates. This also adds a test
that would've caught this issue.

Migration is wrapped by transaction, so manual `commit_db_transaction` without transaction restarting causes "there is no transaction in progress" warnings. We should use `disable_ddl_transaction!` instead, if we can omit transaction completely.

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

* Improve Traditional Chinese translations

* Sort alphabetically

without them, such as is the case with GNU social

Fixes the ability to find GNU social accounts via URL in search and
when using remote follow function

Though the subsections are representing features such as navigation and
settings, they are categorized by the ways how they are implemented
(internal navigation or external links.) They are irrelevant and some
arrangements were confusing because of that. (It is nonsense that instance
information is in settings subsection, for example.)

This fixes the issue by rearranging.

* new strings: hashtag+unlisted, mute, block

* Add confirmation step for email changes

* Add more instance stats APIs

* Don't normalize URLs in toots

URL normalization is ill-defined and may cause certain links to break.

* Change specs since we are not normalizing user-provided URLs

* 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

* Allow HTTP caching of json view of public statuses

HTML views are not cached as they can contain private statuses as well

* Disable session cookies for ActivityPub json rendering of public toots

The background of the navigation matters because its scrollbar is
transparent.

* Sanitize classlist properly

* Actually properly sanitize every class after the first

* Improve Formatter spec to check for multiple classes and non-space whitespace

* Fix #6140 - Update moved-to property when it's removed too

* Remove trailing whitespace

There's no reason for an Account record to persist after Delete->Actor is received. SuspendAccountService is necessary to make sure deleted toots get sent over streaming API properly and home feeds get cleaned up. By removing Account record, we can ensure that if in the future the account is restored remotely (or username reused), it can start with a clean slate.

yay for regexes, amirite

* 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.