Reply distribution is proceed by Sidekiq, so replied status may be deleted before this.

`Status#reply?` may returns true even if the thread is missing.
e.g. the replied status was deleted or couldn't be fetched.

Then it raises NoMethodError on various AP json serialization.

This issue won't happen on Atom serialization because it checks thread
existence using `StreamEntry#threaded?` instead.

* When accessing uncached media attachment, redownload it

* Prevent re-download of rejected media

* Fix behavior while the button is invisible
e.g. pointer cursor, couldn't open contextmenu
* Avoid rendering the button to remove blank space if no more items are available or no items are rendered

* devise.pt-BR.yml now fully translated

* pt-BR.json now fully translated

* pt-BR.yml partially translated; 46 lines left

* pt-BR.yml now fully translated

* simple_form.pt-BR.yml fully translated

* doorkeeper.pt-BR.yml now fully translated

* E-mail instructions on app/views/user_mailer added and fully translated

* PT-BR translation for #4871

* Deleted an unwanted caracter on pt-BR.yml

* Fixing typos on pt-BR.yml

* Added translation for Pinned toots tab on pt-BR.json

* Added missing translation for navigation_bar.pins

* Fixed spelling on pt-BR.yml

* Update pt-BR.json

* Add scheduled worker to purge old user IPs

* Use ruby 1.9 hash syntax

* Fix race condition when receiving an ActivityPub Create multiple times

* Use a RedisLock to avoid concurrent processing of a same Create activity

* Revert "Enable UniqueRetryJobMiddleware even when called from sidekiq worker (#4836)"

This reverts commit 6859d4c0.

* Revert "Do not execute the job with the same arguments as the retry job (#4814)"

This reverts commit be7ffa2d.

* i18n: Update Polish translation

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

* i18n: Update Polish translation

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

* Update pl.yml

* Update nl.json

* Update nl.yml

* Update nl.json

* l10n update for Redesign video player (#4911)

* Update videp

* Update

I hope this time format works well.

* One missing string

* Update time format

I'd like the complete name of the month in the Long format and the short one in the short format.
I hope it works now

* Support OpenGraph video embeds

It's not really OpenGraph, it's twitter:player property, but it's
not OEmbed so that fits. For example, this allows Twitch clips to
be displayed as embeds.

Also, fixes glitch-soc/mastodon#135

* Fix invalid OpenGraph cards being saved through attaching and
revisit URLs after 14 days

* Redesign video player

* Use new video player on static public pages too

* Use media gallery component on static public pages too

* Pause video when hiding it

* Full-screen sizing on WebKit

* Add aria labels to video player buttons

* Display link card on public status page

* Fix fullscreen from modal sizing issue

* Remove contain: strict property to fix fullscreen from columns

* Make RefollowWorker ActivityPub-only to avoid potential identifier mismatches

* Don't call RefollowWorker on new accounts

* Improve OpenGraph tags for about pages

* Add thumbnail admin setting

* Fix error

* Fix up

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

* Update doorkeeper.nl.yml

* Update nl.yml

* Update simple_form.nl.yml

* Update nl.json

* Update en.json

* Update en.json

* Update nl.json

* Fix ActivityPub handling of replies when LOCAL_DOMAIN ≠ WEB_DOMAIN (#4895)

For all intents and purposes, `local_url?` is used to check if an URL refers
to the Web UI or the various API endpoints of the local instances. Those things
reside on `WEB_DOMAIN` and not `LOCAL_DOMAIN`.

* Change local_url? spec, as all URLs handled by Mastodon are based on WEB_DOMAIN

It seems libicu-dev no longer installs libicu55 needed by charlock_holmes.

* Whenever a remote keypair changes, unfollow them and re-subscribe to them

In Mastodon (it could be different for other OStatus or AP-enabled software),
a keypair change is indicative of whole user (or instance) data loss. In this
situation, the “new” user might be different, and almost certainly has an empty
followers list. In this case, Mastodon instances will disagree on follower
lists, leading to unreliable delivery and “shadow followers”, that is users
believed by a remote instance to be followers, without the affected user
knowing.

Drawbacks of this change are:
1. If an user legitimately changes public key for some reason without losing
   data (not possible in Mastodon at the moment), they will have their remote
   followers unsubscribed/re-subscribed needlessly.
2. Depending of the number of remote followers, this may generate quite some
   traffic.
3. If the user change is an attempt at usurpation, the remote followers will
   unknowingly follow the usurper. Note that this is *not* a change of
   behavior, Mastodon already behaves like that, although delivery might be
   unreliable, and the usurper would not have known the former user's
   followers.

* Rename ResubscribeWorker to RefollowWorker

* Process followers in batches