project_info utilization

[msmith-ccom]

Issue: The project_info class was originally written to manage the status of input/output files, when the project was modified and other general information about the project. In it's current form it is either poorly utilized, or containing redundant information.

Objective: Open discussion on future utilization of the class. Should its usage be expanded further? Could it's functionality be better refactored into other modules.

Notes: Currently the class manages the info.nc file. Information stored within the file:

1. added/removed raws
2. added/removed process
3. added/removed products (of which, the current project does not generate)
4. Storage of last process run