Rewrote the "Intervals" Experiment in WorkflowManager

Now it pays attention to the settings. I also changed the name of the
instruction to "intervals" (from "all-combinations intervals").

There are many more tests too, since _interv() is much more complicated.
Updated License for main.py
models.analyzing: Remove AnalysisRecord; Add LoP.get_workflow_manager()

Only ListOfPieces knows all the settings, so it should make the WorkM.
New Text View Form for Viewing "List" Output

... it's only sort of new...
Implemented WorkflowManager.export() (without Tests)

Oops. I'm in a pinch! Tests later.
Update views/main.py for Recent Commits