Add pagination to admin pages

app/controllers/admin/users_controller.rb

@@ -6,7 +6,7 @@ class Admin::UsersController < Admin::BaseController
     ldap   = LdapService.new
     @ou    = params[:ou] || "kosmos.org"
     @orgs  = ldap.fetch_organizations
-    @users = User.where(ou: @ou).order(cn: :asc).to_a
+    @pagy, @users = pagy(User.where(ou: @ou).order(cn: :asc))
 
     @stats = {
       users_confirmed: User.where(ou: @ou).confirmed.count,