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

Conflicts:
- Gemfile
- app/controllers/api/v1/search_controller.rb
  Conflict because we changed the number of default results to be
  configurable
- app/lib/settings/scoped_settings.rb
  Addition of a new “noindex” site-wide setting,
  conflict due to our change of the two other site-wide settings
  (default flavour and skin instead of theme)
- spec/controllers/application_controller_spec.rb
  Addition of a new “noindex” site-wide setting,
  conflict due to our change of the two other site-wide settings
  (default flavour and skin instead of theme)

Gemfile

@@ -50,6 +50,7 @@ gem 'fastimage'
 gem 'goldfinger', '~> 2.1'
 gem 'hiredis', '~> 0.6'
 gem 'redis-namespace', '~> 1.5'
+gem 'health_check', '~> 3.0'
 gem 'html2text'
 gem 'htmlentities', '~> 4.3'
 gem 'http', '~> 3.3'
@@ -59,7 +60,7 @@ gem 'httplog', '~> 1.3'
 gem 'idn-ruby', require: 'idn'
 gem 'kaminari', '~> 1.1'
 gem 'link_header', '~> 0.0'
-gem 'mime-types', '~> 3.2', require: 'mime/types/columnar'
+gem 'mime-types', '~> 3.3', require: 'mime/types/columnar'
 gem 'nilsimsa', git: 'https://github.com/witgo/nilsimsa', ref: 'fd184883048b922b176939f851338d0a4971a532'
 gem 'nokogiri', '~> 1.10'
 gem 'nsa', '~> 0.2'
@@ -77,7 +78,8 @@ gem 'rails-settings-cached', '~> 0.6'
 gem 'redis', '~> 4.1', require: ['redis', 'redis/connection/hiredis']
 gem 'mario-redis-lock', '~> 1.2', require: 'redis_lock'
 gem 'rqrcode', '~> 0.10'
-gem 'sanitize', '~> 5.0'
+gem 'ruby-progressbar', '~> 1.10'
+gem 'sanitize', '~> 5.1'
 gem 'sidekiq', '~> 5.2'
 gem 'sidekiq-scheduler', '~> 3.0'
 gem 'sidekiq-unique-jobs', '~> 6.0'