Write some functions' prototypes in Recuit.
Base with the gereric classes.
Starting point from the Organic document.
Revert "Revert "Add an ArffParser to the data package and a MainWindow to the GUI""

This reverts commit 0952fb9fbc6f4c5e0920bfefcc42eecff68342d6.
Merge branch 'Recuit-init'