Merge pull request #45 from bkargoll/master

Switch to SLC6 and implement new MVA-MET
Implement Embedding into analysis
Add another line to legends
fix compiler warnings
Split trigger efficiencies for data and MC in RefScaleFactors
Apply embedding weights in Bastian's analysis
fix bugs in Tables.cxx that were introduced to fix compiler warnings
unsigned int values have been changed back to int and some ugly casts
were necessary
also try to fix a bug in the Run script
Add new function suppressDrawingHistOfType to Selection class
fix some bugs in Bastian's implementation of embedding
fix how event numbers are read from Npassed vector
use myCut+1 to get number of events BEFORE myCut, and myCut+2 to get
number of events AFTER myCut