template.py

Added a python script to run all the current analysis steps in one go using a single settings file contained in resources.
I agree with putting this flag into the settings file (I do this in my version as well). However, I much prefer having one single function, call it, say ```template_chain``` which takes the settings dict as an input and defines the relevant services and functions based on ```settings['parametric']```. It would also greatly reduce the duplication of code from the ```parametric_chain``` function to the ```mc_chain``` function at the expense of a few added if statements. How do you both feel about this?

After the other changes are made by Steve and he commits the changes and they are accepted by Sebastian, I'd be happy to make these changes (i.e. combining these two functions into one ```template_chain``` function) myself.