Event display looks for nonexistent branches

[olantwin]

[INFO]  Branch: ShipRpcPoint not found in Tree.
[ERROR] Branch ShipRpcPoint not found!
[ERROR] FairPointSetDraw::Init() branch ShipRpcPoint not found!
[INFO] FairPointSetDraw::Init()
[INFO]  Branch: TargetPoint not found in Tree.
[ERROR] Branch TargetPoint not found!
[ERROR] FairPointSetDraw::Init() branch TargetPoint not found!
[INFO] FairPointSetDraw::Init()
[INFO]  Branch: MTCDetPoint not found in Tree.
[ERROR] Branch MTCDetPoint not found!
[ERROR] FairPointSetDraw::Init() branch MTCDetPoint not found!
[INFO] FairPointSetDraw::Init()
[INFO]  Branch: SiliconTargetPoint not found in Tree.
[ERROR] Branch SiliconTargetPoint not found!
[ERROR] FairPointSetDraw::Init() branch SiliconTargetPoint not found!

Should be easy to check which branches exist and only do things for those.