* Build Index fucntion altered in order to remove specific references to table names and table field names.
   * working for table data.
   * '''Next todo : adapt the search function in order to retrieve the table name & table field names.'''
   * next todo : add hvp_pilot model in current biobank_search model and test more DB tables.
 * Added entities User, Patient, gene, OntologySource, !OntologyTerm . generate- update database.
 * Fill in data from hvp_pilot2 :
   * mysql> insert into gene select * from hvp_pilot2.gene;
   * ...