fix adding hww as signal in ee,mm and vhtt. For vhtt also clean up comme...

...nts in datacard conf file which cause problems for cgs_adaptor.cgs_processes

Hi all,

I found that bbb:hww-sig wasn't switching the hww processes to signal for ee,mm and vhtt.  I came up with a quick fix to doSM.py in this commit, but also had to remove the commented lines in the vhtt setup files which were causing problems for the UncertAdaptor().  Feel free to ignore this pull request if you have a better solution in the works.

cheers,
Andrew