Missing framework modules

[david-md]

When pointing the launcher.py to modules DAS/DAS1a.py and MBF/MBF2_A.py, there are import errors. Specifically, these modules are looking for:

• framework.convenience
• framework.deprecated.controllers
  and there are neither of these subdirectories within the framework directory. If these were included in development of SNAP, could they be pushed to master? I'd love to checkout how these sample modules work.