option for 'un-normalizing' 2D waterfall plot

[cduff4464]

@CJ-Wright made a good point in one of the pull requests pulled in recently, the users should be notified that the data is normalized in the 2D plot and an option given to turn it off. We could add this option into the 2D waterfall dialog window

[JKThanassi]

@cduff4464 I can do this tonight

[cduff4464]

Thanks

[CJ-Wright]

Thanks! For the record the discussion is here