Rename AdminLog to StaffActionLog

app/controllers/admin/users_controller.rb

@@ -72,7 +72,7 @@ class Admin::UsersController < Admin::AdminController
 
   def trust_level
     guardian.ensure_can_change_trust_level!(@user)
-    logger = AdminLogger.new(current_user)
+    logger = StaffActionLogger.new(current_user)
     BoostTrustLevel.new(user: @user, level: params[:level], logger: logger).save!
     render_serialized(@user, AdminUserSerializer)
   end