* Remove obsolete RSS::Serializer test
Since #17828, RSS::Serializer no longer has specific code for deleted statuses,
but it is never called on deleted statuses anyway.
* Rename erroneously-named test files
* Fix failing test
* Fix test deprecation warnings
* Update CircleCI Ruby orb
1.4.0 has a bug that does not match all the test files due to incorrect
globbing
* Refactor imports
* Export show_reblogs when exporting list of followed users
* Add support for importing show_reblogs with following collection
* Fix tests
* Spec output of Settings::Exports::BlockedAccountsController
* Spec output of Settings::Exports::FollowingAccountsController
* Spec output of Settings::Exports::MutedAccountsController
* Spec Settings::Exports::BaseController
This commit removes duplicate specs in classes inheriting
Settings::Exports::BaseController as well.
* Add render_views in more places
* Delegate methods from account to user with allow nil true, so that admin accounts show view renders when missing a user
* Use actual account instances in authorize follow controller spec
* Add basic coverage for settings/exports controller
* Remove unused @account variable from settings/exports controller
* Add coverage for download export actions
* Remove deprecated `render :text` in favor of `send_data` for csv downloads
* Add model to handle exports
* Use Export class in settings/exports controller
* Simplify settings/exports controller methods
* Move settings/export to more restful routes
