Implements SesameTupleQuery.setMaxQueryTime by propagating to the
sql/jdbc setQueryTimeout method
Merge branch 'feature/sesameQueryTimeout' into develop
Added tests for the timeout on SesameTupleQuery. Added informative
message to the exception thrown when query times out.
Merge branch 'feature/sesameQueryTimeout' into develop
Merge branch 'develop' into version2

Conflicts:
	quest-db/src/main/java/it/unibz/krdb/obda/owlrefplatform/core/QuestDBStatement.java
	quest-sesame/src/main/java/sesameWrapper/SesameTupleQuery.java