* Fix #1642, fix #1912 - Previous change (#1718) did not modify how original file was saved on upload

* Fix for when file is missing

* Add rate limits for logins and sign-ups by IP (5 in 5 minutes)
Should be enough for normal attempts

* Add rate limit for forgotten password form as well

* Extract detect_language to separate class

* Use default locale, not just en

* Add spec to confirm that whatlanguage cant identify empty string

* Allow account locale to override default in language detector

* PostStatusService supplies an account to detect language

* Polish zh-cn js translation

* fixes for problems pointed out by gumblex in #2044
* more effectively differentiate between following/follower

* Fix missing period (zh-cn js)

Maybe squash this commit?

* Fix duplicate word (zh-cn js)

* Add admin/instances index action

* Add link to instances admin page

* View lists instances

* Instances, grouped by domain, ordered by count

* Use Account.remote scope

* Extract method: Account.by_domain_accounts

* Add a ReportFilter class

* Add reports and targeted_reports relationships to Account

* Use ReportFilter from admin/reports controller

* Link to admin/reports filtered views from admin account show view

* Add indexes to reports.account_id and reports.target_account_id

* Disable toot button when above 500 characters

* Consider multibyte characters

* Consider spoiler_text

* Use landmark regions on columns

Closes mastodon#1720

* Moving aria-label to div.column

* Simplify render in mailer views

* Simplify render in about/more view

* Simplify render in accounts follow views

* Simplify render in recovery code views

* Simplify render in stream entry embed

* Simplify render in stream entries status partial

* Simplify render in authorize follow new view

Remove non-const version string

Freeze option is unnecessary

* translate onboarding modal to japanese

* fixed translation by feedback

* Make sure we start at least one streaming worker, even if there's only one CPU and we're in production mode.

* Oops, let's make sure we're counting cpus right too.

fixes

* Added oc.yml

* Added `config/locales/oc.yml`.
  Translated in General Occitan (Quent-in).

* Added oc.jsx (Occitan translation)

* Written in General Occitan (lengadocian)
* Added `app/assets/javascripts/components/locales/oc.js`

* Added doorkeeper.oc.yml

* Added `config/locales/doorkeeper.oc.yml` (Quent-in)

* Added simple_form.oc.yml

* Added `config/locales/simple_form.oc.yml` (Quent-in).

* Merge en.yml changes into oc.yml

Added new strings for translations

* Fix typo in oc.yml

* Update javascript locale support (oc)

* Update ruby locale list (oc)

* Fix oc.yml

* Remove obsoleted translations
* Moved old translation of `reports` to `admin.reports`

* Add Russian translation (ru)

* Fix a missing comma

* Fix the wording for better consistency

* Update Russian translation

* Arrange Russian setting alphabetically

* Fix syntax error

* Update Russian translation

* Fix formatting error

* Update Russian translation

* Update Russian translation

* Update ru.jsx

* Fix syntax error

* Remove two_factor_auth.warning (appears obsolete)

* Add missing strings in ru.yml

A lot of new strings translated, especially for the newly added admin section

* Fix translation consistency

* Remove unused method #set_counters_maps from api controller

* Remove unused method #set_account_counters_maps from api controller

* Remove unused method Account#followers_domains

* Remove unused User.prolific scope

* Add mastodon:users:admins task to list all admin emails

* Use interpolated query style in Account.triadic_closures

* Coverage for Account.triadic_closures

* Add FR locale for the onboarding modal component

* Slightly increase the max-width and max-height of the onboarding modal

This is done so it doesn't break with locales whose strings would be
too long

* Update FR locales for onboarding upon PR comments

This single-file commit, heavily based on the zh-hk version as of
ec9999c, fixes the missing js locale. Intentional, significant
departures from current zh-cn yml localizations have been marked with
rationales given.

* Move site title helper to instance helper (name change only)

* Remove newline in <title> tag

* Add site_hostname helper method to wrap up local_domain value

* Use site_hostname helper in places that need local_domain value

* Fixed some words

* Improved and more consistent

* Fixes and a bit less 'je'

* Improved and more consistent

* Another round of improvements and consistency

* More improvements and less 'je'

* Update

* Updated with admin strings

* More improvements and additions - not complete yet, but most is there

* This is what we call in Dutch 'the English disease' :-)

* fix comma

* admin.reportsi

* not needed

* hopefully now fixed

- adjusted elements to fit the pixel grid for better scaling
- optimized the PNG asset and the SVG asset

* Remove docker guide and put it in docs repo

* Move tasks to docs repo

* Move requirements to contributing doc

* Move advice about tagged releases to docs repo

* Move local domain and host config to docs repo

* Link to related tech

These were being skipped with `xit`, but we also just added the `unused` task to
the CI server, and it will be caught there. That seems good enough for this,
instead of requiring a full keys check on every local spec suite run.

* Add spec for media controller

* Add MediaAttachment.attached scope

* Simplify methods in media controller

Also improve efficiency of the mastodon:maintenance:add_static_avatars task

This change includes:

- Improve the spec coverage for incoming request to the webfinger action
- For requests without an accept header (ie, what a browser might look like),
  return a JSON response.
- For requests with an explicit format of xml or json, return that format.
- For requests using an accept header, return that format.

Also adds failing spec showing webfinger does not return xml, which covers the
issue described in: https://github.com/tootsuite/mastodon/issues/1983

* Add `required: true` option to foreign column

* Fixes NoMethodError

```
> Favourite.new.valid?
NoMethodError: undefined method `reblog?' for nil:NilClass
```