Code Clean Up and Structure Updates

[dadamsncsa]

Summary

• Break up large monilithic source files into packages and modules
  • Start with packages for each major large file in src/gresq/dashboard: query, submit, recipe, stats oscm
• Identify key functions and methods that need documentation and testing
• Add google style docstrings to modules classes and methods with the following priority:
  1. Modules
  2. Classes
  3. Key Functions and Methods
     4 Other functions and methods
• Move re-usable code to src/gres/util