Attempting to upload image files that the browser is unable to load results
in “Oops! An unexpected error occurred.”

This commit changes the error handling so that an unprocessable image results
in the file being sent anyway, which might cover a few corner cases, and
provide a slightly better error message.

Fixes #13536

- Expanding a paused video doesn't autoplay anymore
- Default volume level for the expanded video inherited from the original video

Position/playing state/volume are carried over from the original video player
to the modal, but they're not reported back to the modal as it would require
deeper changes.

Fixes #13527

- Fixes caught keyboard events being needlessly propagated
- Let up/down arrows wrap around like the tab key does
- Refactor common code

Bumps [parser](https://github.com/whitequark/parser) from 2.7.1.0 to 2.7.1.1.
- [Release notes](https://github.com/whitequark/parser/releases)
- [Changelog](https://github.com/whitequark/parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/whitequark/parser/compare/v2.7.1.0...v2.7.1.1

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Bumps [globule](https://github.com/cowboy/node-globule) from 1.2.1 to 1.3.1.
- [Release notes](https://github.com/cowboy/node-globule/releases)
- [Commits](https://github.com/cowboy/node-globule/commits

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Bumps [stream-shift](https://github.com/mafintosh/stream-shift) from 1.0.0 to 1.0.1.
- [Release notes](https://github.com/mafintosh/stream-shift/releases)
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Bumps [redis-actionpack](http://redis-store.org/redis-actionpack

) from 5.0.2 to 5.2.0.

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Bumps [uuid](https://github.com/uuidjs/uuid) from 7.0.2 to 7.0.3.
- [Release notes](https://github.com/uuidjs/uuid/releases)
- [Changelog](https://github.com/uuidjs/uuid/blob/master/CHANGELOG.md)
- [Commits](https://github.com/uuidjs/uuid/compare/v7.0.2...v7.0.3

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Bumps [sisteransi](https://github.com/terkelg/sisteransi) from 1.0.0 to 1.0.5.
- [Release notes](https://github.com/terkelg/sisteransi/releases)
- [Commits](https://github.com/terkelg/sisteransi/compare/v1.0.0...v1.0.5

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Bumps [signal-exit](https://github.com/tapjs/signal-exit) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/tapjs/signal-exit/releases)
- [Changelog](https://github.com/tapjs/signal-exit/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tapjs/signal-exit/compare/v3.0.2...v3.0.3

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Bumps [pako](https://github.com/nodeca/pako) from 1.0.10 to 1.0.11.
- [Release notes](https://github.com/nodeca/pako/releases)
- [Changelog](https://github.com/nodeca/pako/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/pako/compare/1.0.10...1.0.11

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Bumps [nokogumbo](https://github.com/rubys/nokogumbo) from 2.0.1 to 2.0.2.
- [Release notes](https://github.com/rubys/nokogumbo/releases)
- [Changelog](https://github.com/rubys/nokogumbo/blob/master/CHANGELOG.md)
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Bumps [excon](https://github.com/excon/excon) from 0.71.0 to 0.73.0.
- [Release notes](https://github.com/excon/excon/releases)
- [Changelog](https://github.com/excon/excon/blob/master/changelog.txt)
- [Commits](https://github.com/excon/excon/compare/v0.71.0...v0.73.0

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Bumps [redis-rack](http://redis-store.org/redis-rack

) from 2.0.4 to 2.1.2.

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Bumps [rqrcode_core](https://github.com/whomwah/rqrcode_core) from 0.1.1 to 0.1.2.
- [Release notes](https://github.com/whomwah/rqrcode_core/releases)
- [Commits](https://github.com/whomwah/rqrcode_core/commits/v0.1.2

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Bumps [aws-sigv4](https://github.com/aws/aws-sdk-ruby) from 1.1.1 to 1.1.2.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/master/gems/aws-sigv4/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/compare/1.1.1...1.1.2

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Bumps [axobject-query](https://github.com/A11yance/axobject-query) from 2.0.2 to 2.1.2.
- [Release notes](https://github.com/A11yance/axobject-query/releases)
- [Changelog](https://github.com/A11yance/axobject-query/blob/master/CHANGELOG.md)
- [Commits](https://github.com/A11yance/axobject-query/compare/v2.0.2...v2.1.2

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Bumps [console-browserify](https://github.com/browserify/console-browserify) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/browserify/console-browserify/releases)
- [Changelog](https://github.com/browserify/console-browserify/blob/master/CHANGELOG.md)
- [Commits](https://github.com/browserify/console-browserify/compare/v1.1.0...v1.2.0

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Bumps [css-what](https://github.com/fb55/css-what) from 2.1.2 to 2.1.3.
- [Release notes](https://github.com/fb55/css-what/releases)
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This is achieved by sending a DELETE request to
/settings/profile/pictures/{avatar,header} via a link that is part of
the upload form's hint of the respective picture.

* Update Twemoji to 12.1.5

SVGs from Twemoji repo https://github.com/twitter/twemoji

* Update emoji_map.json to Unicode 12

Some browsers (at least recent Chrome versions) automatically take
image metadata into account when drawing images into a canvas.
There seem to be no way to prevent that behavior, and the only
way to detect it seems to compare with a known image.

See: https://github.com/w3c/csswg-drafts/issues/4666
Solution adapted from: https://github.com/blueimp/JavaScript-Load-Image/commit/1e4df707821a0afcc11ea0720ee403b8759f3881

Fix regression introduced by ab8d7c06

Fixes #13487

Fix #13484

* Fix Poll fetchPoll action not being debounced.

* Fix unused import in the Poll component

Follow-up to #13452, fixing broken `uri.nil?` test.

Also remove the separate check for `uri` presence, as that would result
in a “Please review 2 errors below” while only one would be listed.

* Fix “Email changed” notification sometimes having wrong e-mail

Fixes #6778

The root of the issue is that `send_devise_notification` was called before
the changes were properly commited to the database, causing the mailer to
pick previous values if running too early.

Devise's documentation provides guidance on how to handle that[1][2], however,
I have found it to not be working, as the following happens, in that order:
- `send_devise_notification` is called for the `email_changed` notification.
  In that case, `changed?` is false and `saved_changes?` is true, so
  if we use the former, we have the same issue.
- the `after_commit` hook is called
- `send_devise_notification` is called for the `confirmation_instructions`
  notification.
  In that case, `changed?` is still false, and `saved_changes?` still true,
  so if we use the latter, that second notification email is simply not
  going to be sent (as we would be queuing the notification *after*
  executing the after_commit hook).

This is because it may be called from either an `after_update` or
`after_commit` hook, the difference not being a call to `save` but the
transaction actually being committed to the database. This may arguably
be a bug in Devise, or Devise's notification.

The proposed workaround is inspired by Devise's documentation but checks
whether a transaction is open to make the call whether to immediately
send the notification or defer it to the `after_commit` hook.

[1]: https://www.rubydoc.info/github/plataformatec/devise/Devise%2FModels%2FAuthenticatable:send_devise_notification
[2]: https://github.com/heartcombo/devise/blob/406915cb781e38255a30ad2a0609e33952b9ec50/lib/devise/models/authenticatable.rb#L133-L194

* Fix cases when sending notifications without changing the model

* Defer sending if and only if in transaction including current record

Bumps [watchpack](https://github.com/webpack/watchpack) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/webpack/watchpack/releases)
- [Commits](https://github.com/webpack/watchpack/compare/v1.6.0...v1.6.1

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Bumps [regexp_parser](https://github.com/ammar/regexp_parser) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/ammar/regexp_parser/releases)
- [Changelog](https://github.com/ammar/regexp_parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ammar/regexp_parser/compare/v1.6.0...v1.7.0

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Bumps [rubocop-rails](https://github.com/rubocop-hq/rubocop-rails) from 2.4.2 to 2.5.2.
- [Release notes](https://github.com/rubocop-hq/rubocop-rails/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop-rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop-rails/compare/v2.4.2...v2.5.2

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Bumps [capistrano](https://github.com/capistrano/capistrano) from 3.12.1 to 3.13.0.
- [Release notes](https://github.com/capistrano/capistrano/releases)
- [Commits](https://github.com/capistrano/capistrano/compare/v3.12.1...v3.13.0

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Bumps [elasticsearch](https://github.com/elasticsearch/elasticsearch-ruby) from 7.5.0 to 7.6.0.
- [Release notes](https://github.com/elasticsearch/elasticsearch-ruby/releases)
- [Changelog](https://github.com/elastic/elasticsearch-ruby/blob/v7.6.0/CHANGELOG.md)
- [Commits](https://github.com/elasticsearch/elasticsearch-ruby/compare/v7.5.0...v7.6.0

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