Updates for the new fitter

Now added the concept of a submode or subcategory.

Additions that are now included

• read in configuration dictionary from a cfg file (streamlines the setup)
• now plots can be summed over submodes or subcategories actual execution script
• ability to save and load fit results (a useful feature)
• now have some basic fit checks which give warnings or return fatal when in strict mode
• added some more useful output when verbose is on
• nicer formatting or print, warning and error messages through the utils class
• can now pass starting values for parameters
• can now run including an extended likelihood term

Still would like to add:

• want to be able to plot not only individual sub categories but also the sum of the sub categories
• ability to add constraints to fit which we will need once we have the efficiencies processed
• ability to throw toys and fit them back
• eventually need to move this back up a directory to replace the old stuff