template.py

Added a python script to run all the current analysis steps in one go using a single settings file contained in resources.
This won't work for anyone but you. But since `spl-solmax-aa.d` is part of the resources that we ship with `pisa`, just use `flux/spl-solmax-aa.d` here. `pisa` will then try to find this file by checking 

 * if it is an absolute path
 * if there is a `$PISA` environment variable, where the file can be found
 * if its part of the resources shipped with `pisa`

The last one is where it will actually find it. Some for all other files in settings.