PARIS – Saracens, helped by the ill-discipline of Stade Francais, overcame a slow start to win 28-17 in the Champions Cup on Sunday, as Bath paid for rotating their squad, losing 22-21 away to Treviso.From the kickoff in Paris, Stade pinned their English visitors back. Peniasi Dakuwaqa scooted over untouched in the corner after three minutes.Zack Henry converted. When he added a penalty after 12 minutes, Saracens had barely completed a pass or escaped their half.The match changed after 21 minutes when flanker Sekou Macalou first tripped Ivan van Zyl as he picked the ball up from a scrum….