Inspired by a user who received the email confirmation in Gmail's spam folder. This happened with Sparkpost correctly setup.

* Add Catalan language

* Add Catalan language

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update settings_helper.rb

* Update mastodon.js

* Update index.js

* Update application.rb

* Update ca.yml

* removed extra spaces at line 225

ref: https://github.com/tootsuite/mastodon/pull/2584

* chore(ja): replace with reasonable word.

* chore(ja): add periods.

* Create common chunk rather than vendor chunk

vendor chunk is a set of modules provided by external vendors, but now we
can have a chunk as a set of modules shared by multiple entry points,
which could be more efficent than having vendor chunk.

* Start rails-ujs in common.js

This is used by /settings/two_factor_authentication.

* Add <ostatus:conversation /> tag to Atom input/output

Only uses ref attribute (not href) because href would be
the alternate link that's always included also.

Creates new conversation for every non-reply status. Carries
over conversation for every reply. Keeps remote URIs verbatim,
generates local URIs on the fly like the rest of them.

* Conversation muting - prevents notifications that reference a conversation
(including replies, favourites, reblogs) from being created. API endpoints
/api/v1/statuses/:id/mute and /api/v1/statuses/:id/unmute

Currently no way to tell when a status/conversation is muted, so the web UI
only has a "disable notifications" button, doesn't work as a toggle

* Display "Dismiss notifications" on all statuses in notifications column, not just own

* Add "muted" as a boolean attribute on statuses JSON

For now always false on contained reblogs, since it's only relevant for
statuses returned from the notifications endpoint, which are not nested

Remove "Disable notifications" from detailed status view, since it's
only relevant in the notifications column

* Up max class length

* Remove pending test for conversation mute

* Add tests, clean up

* Rename to "mute conversation" and "unmute conversation"

* Raise validation error when trying to mute/unmute status without conversation

Update all translation forms that use this "counter" element.

* Small localisation enhancement.

Be consistent regarding "e-mail" vs "courriel": I suggest
using "courriel" to refer to the electronic message and
"e-mail" when used in "adresse e-mail".  This reflects
the usage I generally observe, but I may be wrong.

* Localisation enhancements.

Omit some commas: "..., ..., ou ..." should be "..., ... ou ..."
since "ou" already articulates the sentence.

Also replace "demande" by "requête" when it makes sense.

* Normalize locales

* Restore "mention" locale key

* Update doorkeeper.ar.yml

- Remodelling doorkeeper.ar.yml and adding missing strings from english version to arabic version.
- Translating max strings
- Reviewing some translations
- Other strings to be translated later (complicated somehow)

* Update doorkeeper.ar.yml

Updating translations from lines : 88 to 91

* Update Norwegian translations

* Updated no.json
* Updated activerecord.no.yml
* Updated no.yml
* Updated simple_form.no.yml

* i18n: fix Unicode character error in no.yml

* Javascript escaping code "\uD83D\uDC18" should be "\U0001f418" in
Ruby / yml

* i18n: remove unused keys in Norwegian translation

* Remove unused keys in no.yml and activerecord.no.yml
  by running: `bundle exec i18n-tasks remove-unused no`

* Add missing keys in activerecord.no.yml and no.yml by
  running: `bundle exec i18n-tasks add-missing no`

* i18n: escape the key 'no' in activerecord.no.yml

* Update nl

* Update nl

* Update nl

* Create confirmation_instructions.nl.html.erb

* Create confirmation_instructions.nl.text.erb

* Create password_change.nl.html.erb

* Create password_change.nl.text.erb

* Create reset_password_instructions.nl.html.erb

* Create reset_password_instructions.nl.text.erb

* Update simple_form.ar.yml

Added missing strings that were introduced to simple_form.ar.yml and completing translation.

* Create confirmation_instructions.ar.html.erb

* Create confirmation_instructions.ar.text.erb

* Create password_change.ar.html.erb

* Create password_change.ar.text.erb

* Create reset_password_instructions.ar.text.erb

* Create reset_password_instructions.ar.html.erb

* Updated Thai language

* locale: remove unused translation in Thai

* locale: add Thai to settings menu and application

* locale: fix activerecord.th.yml format

* Update Ukrainian translation (rebased off Russian translation)

* Update Ukrainian, Russian translations

* add redis-namespace gem

* namespace redis usage

* refactor redis namespace code to be less intrusive

previously : would be prepended to keys when the
REDIS_NAMESPACE env var was not set

now if it is not set the namespacing functions are
not used at all, which should prevent disruptions
when instances update.

* fix redis namespace variable style in streaming js

* remove trailing space

* final redis namespace style fix

* Add Turkish yml file

* Add translation files for Turkish

* Deleted click_to_edit key and val

Deleted click_to_edit: Düzenlemek için ilgili ayara tıklayınız line

* follow the instructions for registering the language as stated on the Tootsuite's docs.

* Added translation strings from latest master

Adding ‏ characters to many strings that are misdirected in the interface.

A tiny grammar fix

Updates of Hebrew strings to v1.3.1

Hebrew translation of the mailer templates.

Fix strings and a missing comma.

Just discovered two string keys were updated. this should lay Travis' mind to rest at last.

Remove mentions before counting characters to decide RTL ratio

Fixes for PR #2573

updated strings for latest master

Undo RTL counting, moved out to another branch for future consideration...

* locale: remove unused keys in zh-HK

* locale: update json translations

* handled the untranslated strings.
* removed unused keys.

* add brakeman to Gemfile

* Enable CodeClimate brakeman checks

* add config/brakeman.ignore

* translateionRunner: improve minimalist options

* Properly added flags.
* Added alias: -h, -f

* translationRunner: improve logic and flow

* Show all error messages instead of validate availability / name
  format separately.

* translationRunner: check messageDirectory existance

* translationRunner: changed throw string to Error

* translationRunner: use short cut for boolean

* Fix Scheduler::SubscriptionsScheduler, add worker test for it

* Change production log level of Sidekiq to "warn" instead of "info"

* package.json: Add "build:*" targets

* Improve react-intl-translations-manager workflow.
  * Added "build:production" to build production bundle.
  * Added "build:development" to build development bundle.

* Fix json translation files

* Run `yarn manage:translations` to fix translation files.
* Fix `pl.json` for syntax error.

* translationRunner: auto detect existing languages

* Auto detect existing rfc5646 language tag in *.json filenames
  in `app/javascript/mastodon/locale` folder. No need to manually
  define every new language in the languages array here.

* translationRunner: add more functionality

* Allow script user to specify language code to check.
* Added available language check.
* Added --force flag to force creation of unexists language.
* Added --help flag and help messages.

* gitignore: ignore npm-debug.log

* Fix webpack error if NODE_ENV is not defined

Default to use 'development' in config/webpack/configuration.js

* locale: Add missing translation in zh-HK.yml

* locale: fix consistancy in zh-HK.yml translation

* locale: Improve zh-HK yml translations

* Use "PuSH" in all "PubSubHubBub" occurances.
* Simplify text on front page.
* Improve doorkeeper authorization table translations.
* Simplify setting form text for better layout.
* Improve "Business Email" translation.

* locale: Update zh-HK.json

* Fix untranslated text.
* Improve translations.

* Fix #2473 - Use sidekiq scheduler to refresh PuSH subscriptions instead of cron

Fix an issue where / in domain would raise exception in TagManager#normalize_domain

PuSH subscriptions refresh done in a round-robin way to avoid hammering a single
server's hub in sequence. Correct handling of failures/retries through Sidekiq (see
also #2613). Optimize Account#with_followers scope. Also, since subscriptions
are now delegated to Sidekiq jobs, an uncaught exception will not stop the entire
refreshing operation halfway through

Fix #2702 - Correct user agent header on outgoing http requests

* Add test for SubscribeService

* Extract #expiring_accounts into method

* Make mastodon:push:refresh no-op

* Queues are now defined in sidekiq.yml

* Queues are now in sidekiq.yml

* Persian translation update

* fix newline typo

* Remove best_in_place

* Replace best_in_place usage with rails helpers

* Move admin/settings#index to #edit action

* Remove click_to__edit from i18n

connection options instead of setting REDIS_HOST etc individually

Close #1986