If the triggers parameter is not given in the cuts PSet, print a warning and
continue as though no triggers were given.
Defined EXIT_CODE, to be used as the exit code for a module if there is an
error.
Allow for cutting on userVariables collection
First commit of the CutFlowPlotter plugin.
Merge remote-tracking branch 'upstream/LS1_Upgrade' into cut_flow

Conflicts:
	AnaTools/plugins/BuildFile.xml
Created a rough version of the add_channels function which works with the new
modules.
Merge branch 'cut_flow' into LS1_Upgrade