Let NaiveBaiseClassifier manage the classifier maps

It simpilifies the way to store/update/restore these maps and avoid to
suppress data by a bad map sync between both classes.
Modularize the mean to get emotion and store data...

... of each classifier in a seperated file
Add a way to store on disk recorded data
Add a plot for final presentation and R script to make boxplots
Update presentation
update submodule