The in-your-face attitude, emblazoned on black T-shirts, is unmistakable: “Jesus is Lord. Satan is a punk. Pick a side.”     Street Life, a Christian outreach to young people in Houston’s urban hip-hop culture, offers a distinctive blend of student ministry, evangelism, church planting and discipleship.      The hip-hop approach operates on two fronts.      Hard-edged, street-wise entertainment with a distinctively…