It’s not the twenty-fifth anniversary year that Pam Peterson was envisioning for Gondwana & Divine Clothing Co., the boutique on North Main Street in Concord that she owns with her daughter Amanda Perkins. Instead of hosting sales and events to celebrate a quarter-century in business, Peterson and Perkins have been scrambling to shift sales online, engaging with their customers virtually and trying to keep the same fun, friendly vibe that has kept customers coming through their doors for decades.