Bug/predict with label fix

It now gives proper output, like:

predictions = opentox.predictWithModelWithLabel(
  "http://apps.ideaconsult.net:8080/bioclipse/",
  "http://apps.ideaconsult.net:8080/bioclipse/model/7",
  list
)
[["XLogP"],
["2.046999931335449"],
["0.019999999552965164"],
["-0.17599999904632568"]
]