* Bump ruby version to 2.4.2

https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-4-2-released/

Gemfile.lock is also updated.

TODO
- [ ] Update Dockerfile with Alpine release of ruby-2.4.2

* Revert jwt version

It seems that jwt 2.0.0 fails in some environment.
ref. https://github.com/zaru/webpush/issues/42

* Bump Ruby version on docker image

Bumps [puma](https://github.com/puma/puma) from 3.9.1 to 3.10.0.
- [Release notes](https://github.com/puma/puma/releases/tag/v3.10.0)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](https://github.com/puma/puma/compare/v3.9.1...v3.10.0)

Bumps [rails](https://github.com/rails/rails) from 5.1.3 to 5.1.4.
- [Commits](https://github.com/rails/rails/compare/v5.1.3...v5.1.4)

* Fix language filter codes

CLD3 returns BCP-47 language identifier, filter settings expect
identifiers in the ISO 639-1 format. Convert between formats,
and exclude duplicate languages from filter choices (zh-CN->zh)

* Fix zh name

* Add handling of Linked Data Signatures in payloads

* Add a way to sign JSON, fix canonicalization of signature options

* Fix signatureValue encoding, send out signed JSON when distributing

* Add missing security context

* Update twitter-text to version 1.14.7

* Update tilt to version 2.0.8

* Update statsd-instrument to version 2.1.4

* Update sidekiq to version 5.0.4

* Update sidekiq-scheduler to version 2.1.8

* Update sidekiq-unique-jobs to version 5.0.9

* Update redis-activesupport to version 5.0.3

* Update rails-settings-cached to version v0.6.6

* Update pkg-config to version 1.2.4

* Update parallel_tests to version 2.14.2

* Update jsonapi-renderer to version 0.1.3

* Update i18n-tasks to version 0.9.16

* Update httplog to version 0.99.7

* Update fabrication to version 2.16.2

* Update bootsnap to version 1.1.2

* Update aws-sigv4 to version 1.0.1

* Update aws-sdk-core to version 2.10.21

* Update hashdiff to version 0.3.5

* Update rails to version 5.1.3

- No masking of HTTP::Error and OpenSSL::SSL::SSLError
- No longer accepts non-HTTPS WebFinger endpoints

* Refactor ResolveRemoteAccountService

* Remove trailing whitespace

* Use redis locks around critical ResolveRemoteAccountService code

* Add test for race condition of lock

* Add dependency on idn-ruby to speed up URI normalization

* Use normalized_host instead of normalize.host when applicable

When we are only interested in the normalized host, calling normalized_host
avoids normalizing the other components of the URI as well as creating a
new object

- Use unicode when selecting emoji through picker
- Convert shortcodes to unicode when storing text input server-side
- Do not convert shortcodes in JS anymore

* feat: Register push subscription

* feat: Notify when mentioned

* feat: Boost, favourite, reply, follow, follow request

* feat: Notification interaction

* feat: Handle change of public key

* feat: Unsubscribe if things go wrong

* feat: Do not send normal notifications if push is enabled

* feat: Focus client if open

* refactor: Move push logic to WebPushSubscription

* feat: Better title and body

* feat: Localize messages

* chore: Fix lint errors

* feat: Settings

* refactor: Lazy load

* fix: Check if push settings exist

* feat: Device-based preferences

* refactor: Simplify logic

* refactor: Pull request feedback

* refactor: Pull request feedback

* refactor: Create /api/web/push_subscriptions endpoint

* feat: Spec PushSubscriptionController

* refactor: WebPushSubscription => Web::PushSubscription

* feat: Spec Web::PushSubscription

* feat: Display first media attachment

* feat: Support direction

* fix: Stuff broken while rebasing

* refactor: Integration with session activations

* refactor: Cleanup

* refactor: Simplify implementation

* feat: Set VAPID keys via environment

* chore: Comments

* fix: Crash when no alerts

* fix: Set VAPID keys in testing environment

* fix: Follow link

* feat: Notification actions

* fix: Delete previous subscription

* chore: Temporary logs

* refactor: Move migration to a later date

* fix: Fetch the correct session activation and misc bugs

* refactor: Move migration to a later date

* fix: Remove follow request (no notifications)

* feat: Send administrator contact to push service

* feat: Set time-to-live

* fix: Do not show sensitive images

* fix: Reducer crash in error handling

* feat: Add badge

* chore: Fix lint error

* fix: Checkbox label overlap

* fix: Check for payload support

* fix: Rename action "type" (crash in latest Chrome)

* feat: Action to expand notification

* fix: Lint errors

* fix: Unescape notification body

* fix: Do not allow boosting if the status is hidden

* feat: Add VAPID keys to the production sample environment

* fix: Strip HTML tags from status

* refactor: Better error messages

* refactor: Handle browser not implementing the VAPID protocol (Samsung Internet)

* fix: Error when target_status is nil

* fix: Handle lack of image

* fix: Delete reference to invalid subscriptions

* feat: Better error handling

* fix: Unescape HTML characters after tags are striped

* refactor: Simpify code

* fix: Modify to work with #4091

* Sort strings alphabetically

* i18n: Updated Polish translation

it annoys me that it's not fully localized :P

* refactor: Use current_session in PushSubscriptionController

* fix: Rebase mistake

* fix: Set cacheName to mastodon

* refactor: Pull request feedback

* refactor: Remove logging statements

* chore(yarn): Fix conflicts with master

* chore(yarn): Copy latest from master

* chore(yarn): Readd offline-plugin

* refactor: Use save! and update!

* refactor: Send notifications async

* fix: Allow retry when push fails

* fix: Save track for failed pushes

* fix: Minify sw.js

* fix: Remove account_id from fabricator

* Specs for language detection

* Use CharlockHolmes instead of NKF

* Correct mistakes

* Correct style

* Set hint_enc instead of falling back and strip_tags

* Improve specs

* Add dependencies

* Update aws-sdk to version 2.10.4

* Update bootsnap to version 1.1.1

* Update capistrano to version 3.8.2

* Update capybara to version 2.14.4

* Update cld3 to version 3.1.3

* Update http_accept_language to version 2.1.1

* Update sidekiq to version 5.0.3

* Update rspec-sidekiq to version 3.0.3

* Update sidekiq-scheduler to version 2.1.7

* Update oj to version 3.2.0

* Update openssl to version 2.0.4

* Update pg to version 0.21.0

* Update twitter-text to version 1.14.6

* Update unicode-display_width to version 1.3.0

* Update scss_lint to version 0.54.0

* Update hamlit to version 2.8.4

* Update erubi to version 1.6.1

* Update httplog to version 0.99.4

* Update aws-sdk to version 2.10.6

* Add overview of active sessions

* Better display of browser/platform name

* Improve how browser information is stored and displayed for sessions overview

* Fix test

* Update mail to version 2.6.6

* Update aws-sdk to version 2.9.37

* Update capybara to version 2.14.2

* Update oj to version 3.1.0

* Update sidekiq to version 5.0.2

* Update puma to version 3.9.1

* Update sanitize to version 4.5.0

* Update capistrano-rails to version 1.3.0

$ bundle update --source nokogumbo# Please enter the commit message for your changes. Lines starting

nokogumbo 1.4.11 and 1.4.12 don't work on Heroku.

* Update annotate to version 2.7.2

* Update puma to version 3.9.0

* Update aws-sdk to version 2.9.28

* Update bootsnap to version 1.0.0

* Update nio4r to version 2.1.0

* Update nokogumbo to version 1.4.12

* Update oj to version 3.0.11

* Update pkg-config to version 1.2.3

* Update rubocop to version 0.49.1

* Update sidekiq-scheduler to version 2.1.5

* Update rails to version 5.1.1

* Run `rails app:update`

* Remove the override of polymorphic activity relationship

* Silence warning about otp_secret attribute being unknown to rails

* We will only introduce form_with where we want to use remote data

* Keep ENV['LOCAL_HTTPS'] with ApplicationControllerSpec (fix random fail)

* use climate_control

* Update xpath to version 2.1.0

* Update aws-sdk to version 2.9.25

* Update oj to version 3.0.10

* Update brakeman to version 3.6.2

* Update rufus-scheduler to version 3.4.2

* Update doorkeeper to version 4.2.6

* Update rubocop to version 0.49.0