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

Conflicts:
- app/views/admin/pending_accounts/index.html.haml
  No real conflict, upstream changes too close to glitch-specific
  theming system changes.
- config/navigation.rb
  Upstream redesigned the settings navigation, took those changes
  and re-inserted the flavours menu.

app/helpers/application_helper.rb

@@ -118,4 +118,9 @@ module ApplicationHelper
   def storage_host?
     ENV['S3_ALIAS_HOST'].present? || ENV['S3_CLOUDFRONT_HOST'].present?
   end
+
+  def quote_wrap(text, line_width: 80, break_sequence: "\n")
+    text = word_wrap(text, line_width: line_width - 2, break_sequence: break_sequence)
+    text.split("\n").map { |line| '> ' + line }.join("\n")
+  end
 end