TreeTrigger: Added branches: mc_evt_id, mc_rnd_id for pluto MC true information matching.

These branches get filled with ID numbers then creating
pluto data (using the "split_pluto_events" program, for example).
Then they get passed through a2geant and acqu. Using these you can then
later check that the reconstructed events match with the events stored
in the pluto mc true tree when combining.
Added Pluto Tree
Added random ID to GPlutoTree.
CMakeLists.txt: Clean up output and fixup
Added GTreeA2Geant
Starting my own pi0 class
Personal config choices
Removed bad continue from my class
Revert to GH1s now that they work for non-subtracted things
Edited CMakeLists for my physics class to reflect new histogram classes from Patrik
Edited CMakeLists to utilize new general approach