added some parameters to MoreLikeThis to make it less restrictive
removed beans from luceneConfiguration: not useful
renamed searcher class
Merge branch 'master' into tooling/useMemoryDbAndIndexForUnitTest
UNSTABLE problem of configuration. while running tests on service or ws layer, MongoConfTest not taken into account and localhost db is used instead of in memory db. TO SOLVE
Dataset on categories and trainingset otherwise created. Methods tested with the initialisation of mongo collections