plotSpectrum/plotTimeBin commands don't work in user scripts only in main window

[martyngigg]

Using either plotSpectrum/plotTimeBin in a user module no longer works.

For example

module.py file

def doPlot():
plotSpectrum('ws',0)

myscript.py ## This is the one in main window

import module
module.doPlot()

=> NameError on line 2: global name 'plotSpectrum' is not defined in file 'module.py' at line 2

[martyngigg]

This issue was originally trac ticket 1040