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/views/admin/pending_accounts/index.html.haml

@@ -1,7 +1,7 @@
 - content_for :page_title do
   = t('admin.pending_accounts.title', count: User.pending.count)
 
-= form_for(@form, url: admin_pending_accounts_path, method: :patch) do |f|
+= form_for(@form, url: batch_admin_pending_accounts_path) do |f|
   = hidden_field_tag :page, params[:page] || 1
 
   .batch-table