Co-authored-by: Claire <claire.github-309c@sitedethib.com>

* Use Rails tag API to build RSS feed for spoilers and polls

While the previous method did not contain a bug or a potential issue,
the tag API can be very resilient against future problems and reduces the
amount of manual management of the escape status of the content.

I've added tests to ensure that the formatting is broken and still
escapes control characters correctly.

* this seems cleaner and passes

* Incorporate feedback by moving the br to its own line and using the tag helper over the string constant for the br tag itself

* whoops, tag helper doesn't use a self-closing tag

enviroment -> environment

`:en` is English for both `standard_locale_name` and
`native_locale_name`, and so makes for a poor test candidate for
differentiating between them.

* Refactor audit log schema

* Add audit log entries for user roles

- Add rake task for generating Apple/Android icons and favicons from SVG
- Add rake task for generating PNG icons and logos for e-mails from SVG
- Remove obsolete Microsoft icons and configuration
- Remove PWA shortcut icons

* spelling: account

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: affiliated

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: appearance

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: autosuggest

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: cacheable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: component

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: conversations

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: domain.example

Clarify what's distinct and use RFC friendly domain space.

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: environment

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: exceeds

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: functional

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: inefficiency

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: not

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: notifications

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: occurring

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: position

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: progress

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: promotable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: reblogging

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: repetitive

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: resolve

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: saturated

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: similar

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: strategies

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: success

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: targeting

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: thumbnails

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: unauthorized

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: unsensitizes

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: validations

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: various

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>

* Remove language detection through cld3

* Update app/helpers/languages_helper.rb

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

* Add trending links

* Add overriding specific links trendability

* Add link type to preview cards and only trend articles

Change trends review notifications from being sent every 5 minutes to being sent every 2 hours

Change threshold from 5 unique accounts to 15 unique accounts

* Fix tests

* Add specs for ActionLogHelper

* Make some methods private

methods below never referenced from outside of their module:

- #linkable_log_target
- #log_target_from_history

Fix #6856
Fix #6951

* Add specs for JsonLdHelper#first_of_value

* Add specs for JsonLdHelper#supported_context?

* Revert "Fix some icon names changed by the Font Awesome 5. (#8796)"

This reverts commit 3f9ec3de.

* Revert "Migrate to font-awesome 5.0. (#8799)"

This reverts commit 8bae1459.

* Revert "Fix some icons names, unavailable in fontawesome5 (free license). (#8792)"

This reverts commit b9c727a9.

* Revert "Update the icon name changed by the Font Awesome 5. (#8776)"

This reverts commit 17af4d27.

* Revert "Add bot icon to bot avatars and migrate to newer version of Font Awesome (#8484)"

This reverts commit 4b794e13.