Adding ggH/qqH_hww to postfit plots

- added ggH_hww and qqH_hww for em postfit plots. (At the moment these signal samples are just added to ggH/qqH. It is not yet forseen that these may be shown separately). 
- cleaned up produce/run_macros.C to work with em. Cleaned up directory structture in produce_macros.C in general.
- added scales*.py to objects to be cleaned after use in cleanup.py.