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

Conflicts:
	app/views/layouts/application.html.haml

Edited:
        app/helpers/application_helper.rb
        app/views/admin/domain_blocks/new.html.haml

Conflict wasn't really one, just two changes too close to one another.
Edition was to adapt the class names for themes to class names for
skins and flavours.

Also edited app/views/admin/domain_blocks/new.html.haml to strip the
duplicate admin pack inclusion thing.

lib/tasks/mastodon.rake

@@ -222,7 +222,7 @@ namespace :mastodon do
         end
 
         if prompt.yes?('Do you want to access the uploaded files from your own domain?')
-          env['S3_CLOUDFRONT_HOST'] = prompt.ask('Domain for uploaded files:') do |q|
+          env['S3_ALIAS_HOST'] = prompt.ask('Domain for uploaded files:') do |q|
             q.required true
             q.default "files.#{env['LOCAL_DOMAIN']}"
             q.modify :strip
@@ -512,14 +512,9 @@ namespace :mastodon do
 
     desc 'Remove cached remote media attachments that are older than NUM_DAYS. By default 7 (week)'
     task remove_remote: :environment do
-      time_ago = ENV.fetch('NUM_DAYS') { 7 }.to_i.days.ago
-      nb_media_attachments = 0
-
-      MediaAttachment.where.not(remote_url: '').where.not(file_file_name: nil).where('created_at < ?', time_ago).select(:id).reorder(nil).find_in_batches do |media_attachments|
-        nb_media_attachments += media_attachments.length
-        Maintenance::UncacheMediaWorker.push_bulk(media_attachments.map(&:id))
-      end
-      puts "Scheduled the deletion of #{nb_media_attachments} media attachments"
+      require_relative '../mastodon/media_cli'
+      cli = Mastodon::MediaCLI.new([], days: ENV['NUM_DAYS'] || 7)
+      cli.invoke(:remove)
     end
 
     desc 'Set unknown attachment type for remote-only attachments'