Forward port of #68 (to the extent it is possible)
Forward port to 7.0.X the PR #69.
Did *NOT* check that cfgs run
Hemisphere.cc: remove unused variables to make it compile with newer gcc
store event numbers as unsigned
put also a few more variables using jets in the full rapidity range
slight cleanup of samples file
remove some obsolete analyzers
SoftLepton things (at the moment, set up for soft opposite-sign dilepton analysis)