Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- app/controllers/accounts_controller.rb
- app/controllers/follower_accounts_controller.rb
- app/controllers/statuses_controller.rb

All conflicts caused by the additional `use_pack` used for glitch-soc's theming
system.

Gemfile

@@ -129,7 +129,7 @@ group :development do
   gem 'letter_opener_web', '~> 1.3'
   gem 'memory_profiler'
   gem 'rubocop', '~> 0.65', require: false
-  gem 'brakeman', '~> 4.4', require: false
+  gem 'brakeman', '~> 4.5', require: false
   gem 'bundler-audit', '~> 0.6', require: false
   gem 'scss_lint', '~> 0.57', require: false