Dubai: Picture this, it’s a hot summer afternoon in Dubai and a job interview is underway. Questions, answers and follow-ups move back and forth across the table. But one question kept pulling at Stephen Wanless, and it had nothing to do with the job. It was about first impressions.In a city where summer afternoons test every collar, how does a man stay composed in a work shirt? Could a classic shirt help manage perspiration without changing how…