Restoration Hardware was having a pretty hard time of it when private-equity firm Catterton Partners took it off the Nasdaq in 2008. The combination of the recession and the housing crash wreaked havoc on RH's business selling quaint home furnishings, letting Catterton and CEO Gary Friedman snap it up for just $6.70 a share. But since then, the company has been through a transformation far more substantial than your typical round of private-equity cost