Start d2r on molgenis n3 mapping :

 * In local installation d2r-server -p 2020 molgenis.n3
 * there are some problems about :
   * de.fuberlin.wiwiss.d2rq.D2RQException: Column @@digital_identity.digital_identity_id@@ not found in database (E0)
   * Exception in thread "main" java.lang.[wiki:NullPointerException]
     * at de.fuberlin.wiwiss.d2rs.!JettyLauncher .start(!JettyLauncher.java:68 )
     * at d2r.server.startServer(!server.java:86 )
     * at d2r.server.main(!server.java:57 )
   * The problem above is a inconsistency of the model that lives in the directory where d2r server is run and the database schema. 
     * Solved by steps: 
       1. generate in molgenis .
       1. update database
       1. run 
       1. copy generated .n3 file in d2r running directory 

  TODO :

 * Next steps : check which DB it makes use . This digital identity seems to be in a really old DB .(DONE)
 * after taking NULL EXCEPTION off the command line run of D2R..(DONE - see steps above)
 * check the SPARQL interface if is running om localhost/8080 http://localhost:2020/snorql/ (DONE  check at !http://localhost:2020/snorql/) 

DONE :

  23     !d2rq:jdbcDSN  "jdbc:mysql://127.0.0.1/addressbook "; this is actually used . So copy another molgenis n3 mapping from a valid database. The schemes seems to be incompatible .