Add progress messages to scripts

[tniet]

Current scripts don't show their progress on the command line. Add a few print statements that indicate progress to the user.

[willu47]

I would recommend using the Python logging library (built into the core code) or tfqm which provides a one line progress bar for loops.

[maartenbrinkerink]

@trevorb1 I believe we currently have progress messages in the workflow indicating the start/end of individual scripts? Closing this issue for now, if this is presumptuous feel free to reopen.