Add tools for pull studies, Moriond datacards

Hi Cecile (and @mverzett),

Here are the scripts I have been using for the fit bias studies.  There is a script to run all the jobs (some via condor):

https://github.com/ekfriis/HIG-13-004/blob/master/mu_bias_submit_toys.sh

and then to plot the results:

https://github.com/ekfriis/HIG-13-004/blob/master/mu_bias_make_plots.sh

I am going to be able to contribute much less on the next two weeks (and then I leave forever :( ) so perhaps one of you can  run these checks in the future if more are needed.  Please let me know if you have any questions about how to run the tool.

Evan