rework of the data extraction, echonest and freebase are working
Corrects singleton pattern in DBHelper, corrects hasData usage in EchoNest, some indentation and warning fixes
Changed code for parse EchoNest and added error handling
adding facebook
adding fb lib
Everything should work now, will merge with the main
Merge branch 'master' of github.com:arthurgiroux/assisted-promotion-tool

Conflicts:
	data_extraction/twitter/DFTwitterBot/src/main/java/com/mycompany/dftwitterbot/DBHelper.java
	data_extraction/twitter/DFTwitterBot/src/main/java/com/mycompany/dftwitterbot/DFTwitterBot.java
	data_extraction/twitter/DFTwitterBot/target/DFTwitterBot-1.0-SNAPSHOT.jar
	data_extraction/twitter/DFTwitterBot/target/classes/com/mycompany/dftwitterbot/DBHelper.class
	data_extraction/twitter/DFTwitterBot/target/classes/com/mycompany/dftwitterbot/DFTwitterBot.class
	data_extraction/twitter/DFTwitterBot/target/maven-archiver/pom.properties
	data_extraction/twitter/DFTwitterBot/target/surefire-reports/TEST-com.mycompany.dftwitterbot.AppTest.xml
	data_extraction/twitter/DFTwitterBot/target/surefire-reports/com.mycompany.dftwitterbot.AppTest.txt
	data_extraction/twitter/DFTwitterBot/target/test-classes/com/mycompany/dftwitterbot/AppTest.class
	data_extraction/twitter/DFTwitterBot/twitterdetails.dftb
Merge branch 'master' into rework