remove print statements in favor of logging

[jcessna]

although much of disdat output uses python logging, there are still many print statements that make it difficult to filter out unwanted verbose output for users of disdat library

[kyocum]

Converted the incremental db built prints to logger statements when doing a pull. Please comment below on others that might exist.

[jcessna]

Pushed committed bundle None uuid d7afdfb1-4db0-4e98-bc3a-4a72a2490754 to remote s3://moonscape-disdat/context