first version of the linkback baseline
added unit tests
Merge branch 'master' into devel-linkback

Conflicts:
	src/main/java/it/acubelab/smaph/SmaphAnnotator.java
	src/main/java/it/acubelab/smaph/learn/GenerateTrainingAndTest.java
merge with master
basic linkback baseline
updated linkback test
disable WAT useContext