simple test of linear chain ner spotter
*Making ChainCRF generic, working also if no types are given.
*Serialization and Deserialization working
*Integration in SpotlightModel
* migration of ChainCrf to factorie 1.0 and scala 2.10
* New spotter for pretrained ner models from factorie: see PretrainedFactorieNerSpotter, SimpleNerSpotter, BilouConllNerSpotter