Weddings are a project, and they benefit from a good project management tool. We talked to the CEO of Zola, one of Lifehacker readers' favourite wedding sites. Australian Shan-Lyn Ma co-founded Zola after undergoing the stress of buying people wedding gifts; her co-founder Nobu Nakaguchi had gone through the stress of setting up a wedding registry. Ma talked to Lifehacker about running the company, organising her life, and how to make yourself irrelevant.