The Topic Engine now uses the ManagedSolrServer to init SolrCores. The same is true for Trainingset. Note that this means that SolrCore configurations are now loaded via the DataFileProvider infrastructure. This allows users to load custom models and/or pre-trained models copied to the 'stanbol/datafiles' folder - STANBOL-1087; updates default schemas used by the TopicEngine and Trainingset to Solr 4 - STANBOL-1086; Added a default SolrCore configuration for the Topic Engine that supports n-grams - STANBOL-1089; removed all configuration properties used to configure the name of Solr fields from the Felix Webconsole dialog. Added constants for the default values. Configuration of those properties is still supported by parsing OSGI configuration files - STANBOL-1090

git-svn-id: https://svn.apache.org/repos/asf/stanbol/trunk@1489728 13f79535-47bb-0310-9956-ffa450edef68