Plotting: DataFrame: Improved exception messages and  added IvwContext
Plotting: DataFrame: Improved exception messages and  added IvwContext

Sparkier/inviwo,inviwo/inviwo,inviwo/inviwo,inviwo/inviwo,inviwo/inviwo,Sparkier/inviwo,inviwo/inviwo,Sparkier/inviwo,Sparkier/inviwo,inviwo/inviwo,Sparkier/inviwo