Disambiguation: new constructors.
Merge remote-tracking branch 'origin/master'

Conflicts:
	org.dragoneronca.nlp.wol/src/org/dragoneronca/nlp/wol/graph_building/SenseSetProcessor.java
Small changes in task Disambiguation.
SenseSetProcessor: now the context of a senseReference is computed only once per call, independently from the number of senseRelations having that senseReference.