Fixes failing mkdir call in conda.sh
Makes String accept unicode again

402c6d2d made String.translate_to_python() only accept 'str' objects,
raising on 'unicode'. This fixes it, although only ascii is safe at this
time.
Fixes imports in parallelflow/map.py
parallelflow: Fixes formatting of an error message
Removes 'nologger=True' from spawned_startup.xml

Removed because it breaks ParallelFlow.
Removes debug output
Fixes '!= None' in CodeRunnerMixin
Fixes horrible busy-loop
Go back to ignoring PythonSource locals if None
Adds "Namespace:" line to module info panel
remove print statements in polygon port drawing.
Merge pull request #979 from amueller/remove_polygon_drawing_prints

Remove print statements from QGraphicsPortPolygonItem.
Fixes exception selecting module without namespace
Adds action for re-executing a cell in the spreadsheet

This is useful for workflows accessing changing data such as status information.
Also useful for returning to an un-modified cell.