* src/main/java/jgreg/internship/nii/WF/StatisticsWF.java,
* src/main/java/jgreg/internship/nii/AE/ExtractAllAE.java: Put the headers configuration in the mapping file.
* src/main/java/jgreg/internship/nii/AE/ExtractAllAE.java: Keep the order of the parameters
* src/main/java/jgreg/internship/nii/AE/SentimentFinderAE.java: Hacky hack to ignore the order. (WIP)
* src/main/java/jgreg/internship/nii/AE/ExtractAllAE.java: Dump more information (filename and year).
* src/main/java/jgreg/internship/nii/WF/StatisticsWF.java: Do that in a dedicated INFO_FILE